Some links on our site may earn us a commission at no extra cost to you. Learn more.
Quick verdict: a double-edge safety razor costs the least per shave by a wide margin once you get past the one-time razor purchase, a cartridge system costs the most per shave despite the lowest up-front price, and disposables land in between — cheap to buy, but the fastest to pile up in a landfill. If you shave regularly and haven’t looked at the blade aisle in a few years, the gap between these three is bigger than most people assume.
The pick, at a glance
- Best overall value: Double-edge safety razor — a one-time hardware cost around $65, then pennies per shave on blades indefinitely.
- Best for convenience: Cartridge razor — no learning curve, but refills are the most expensive part of any shaving routine here.
- Best for travel or backup: Disposable razor — cheapest hardware, no maintenance, but the highest per-shave cost isn’t obvious until you do the math.
- Skip if: you’re chasing the lowest possible cost per shave and still buying name-brand cartridge refills at list price — that’s the single most expensive habit in this comparison.
Safety, cartridge, and disposable razors side by side
| Razor type | Hardware cost | Refill cost | Manufacturer-claimed shaves/unit | Reviewer-reported shaves/unit |
|---|---|---|---|---|
| Safety razor (e.g., Merkur 34C) | $64.99, one-time | Astra Superior Platinum DE blades, ~$0.48/blade (5-pack) | Not published by blade manufacturers | 3–7 shaves/blade, per shaving-community consensus (Badger & Blade, Sharpologist) |
| Cartridge (e.g., Gillette Fusion5) | Handle typically bundled free or low-cost with refill packs | ~$3.50/cartridge (16-count pack, $56 at current Gillette.com pricing) | ~20 shaves, per P&G’s official consumer-care FAQ | 7–12 shaves before comfort drops off, per Badger & Blade reviewer consensus |
| Disposable (e.g., BIC Classic Sensitive) | None — razor is the disposable unit | ~$0.24/razor (52-pack, $12.47 at Walmart) | Not consistently published | ~4 uses/razor, per one grooming-review estimate — treat as a rough figure, not an industry consensus |
Safety razors: the highest up-front cost, the lowest cost forever after
A double-edge safety razor like the Merkur 34C runs about $65 up front — more than any other option here — but that’s the only real hardware cost you’ll ever pay. Blades are the actual consumable, and a 5-pack of Astra Superior Platinum DE blades runs around $2.39, or roughly $0.48 per blade. Blade longevity isn’t something manufacturers publish a hard number for, since it depends heavily on beard coarseness and technique, but shaving-community consensus on forums like Badger & Blade and Sharpologist generally lands in the 3-to-7-shaves-per-blade range.
The trade-off is real: safety razors have a genuine learning curve, and a bad angle or too much pressure means more nicks while you’re learning than a cartridge razor would ever produce. Once the technique clicks, though, the cost math below shows why so many long-time wet shavers never go back.
Cartridge razors: the convenience tax
Cartridge systems like Gillette’s Fusion5 are the default for most first-time shavers because there’s effectively no learning curve — the multi-blade cartridge and pivoting head do most of the work. The catch is refill pricing: a 16-count pack of Fusion5 cartridges runs $56 at current promotional pricing on Gillette.com, which works out to about $3.50 per cartridge.
Here’s where the manufacturer-versus-reality gap matters most. P&G’s own consumer-care FAQ states that 3-blade razors last roughly 15 shaves and Fusion or ProGlide-style 5-blade cartridges last around 20, with Gillette Labs’ newest 5-blade design rated for about 30. But Badger & Blade’s reviewer consensus reports meaningfully fewer real-world shaves before comfort noticeably drops off — as low as 3 to 5 for basic Sensor-style cartridges and roughly 7 to 12 for Fusion or ProGlide, once you account for the blade dulling rather than fully wearing out. That gap alone can more than double your real cost per shave versus what the package math implies.
Cartridge razors make sense if convenience and a short learning curve matter more to you than cost, but they’re worth budgeting for accurately — using the manufacturer’s shave count rather than the more conservative reviewer estimate will underestimate your real annual spend.
Disposable razors: cheap per unit, expensive per shave
Disposables look like the budget option because the sticker price is so low — a 52-pack of BIC Classic Sensitive razors runs about $12.47 at Walmart, or roughly $0.24 per razor. The problem is how few shaves each one is good for. One grooming-review estimate puts it at around four uses per razor before performance clearly degrades; that figure comes from a single lifestyle-blog source rather than a broad consensus, so treat it as a reasonable estimate rather than a verified industry number.
Do the math on that estimate and the “cheap” option stops looking cheap: at roughly $0.24 per razor and four shaves per razor, you’re paying about $0.06 per shave in materials — which sounds fine until you compare it to a safety razor blade’s cost per shave below. Disposables also generate the most physical waste per shave of the three, since the entire unit is thrown away rather than just a blade or cartridge head.
Disposables are best reserved for travel, gym bags, or as a backup when you’re out of your primary blades — not as a full-time daily-shave strategy, once you see the real per-shave number.
Original data: cost per shave, and the manufacturer-vs-reality gap
Using the prices and shave counts cited above, here’s the cost per shave for each razor type — including the meaningful gap between what a cartridge manufacturer claims and what reviewers report getting in real use.
| Razor type | Cost per shave (best case) | Cost per shave (reviewer-reported case) |
|---|---|---|
| Safety razor | ~$0.07/shave (at 7 shaves/blade) | ~$0.16/shave (at 3 shaves/blade) |
| Cartridge razor | ~$0.18/shave (at 20 shaves/cartridge, per P&G) | ~$0.44/shave (at ~8 shaves/cartridge, mid-point of reviewer range) |
| Disposable razor | ~$0.06/shave (at ~4 shaves/razor — single-source estimate, treat as approximate) | |
Two things stand out. First, even in its worst-case, fewest-shaves-per-blade scenario, a safety razor still costs less per shave than a cartridge razor does in its best-case, manufacturer-claimed scenario. Second, the disposable’s low headline cost per shave doesn’t account for the fact that you’re replacing the entire razor, blade guard and handle included, every few shaves — a genuinely different amount of material waste than swapping a blade or cartridge head alone, even at a similar dollar cost. Annualized for someone shaving five times a week, the safety razor comes out to roughly $18–$42 a year in blades, a cartridge system to roughly $47–$114, and disposables to somewhere in a similar range to the safety razor in dollars — but with several times the material waste.
How we compared
We built this comparison from current first-party retailer pricing (West Coast Shaving, Gillette.com, Walmart) checked on the day of publication, plus P&G’s own published consumer-care guidance for cartridge longevity and long-running shaving-community discussion threads for real-world blade life. We did not conduct our own multi-week shave test. Where a figure came from a single source rather than a broad consensus — like the disposable-razor shave count — we flagged it explicitly rather than presenting it as verified fact. This piece follows the same approach as the rest of our Beauty & Grooming comparisons, including our electric shaver comparison. Read more on our editorial standards page. Prices are approximate, current as of publication, and change frequently — confirm the latest price with the retailer before buying.
Frequently asked questions
Is a safety razor actually cheaper than a cartridge razor?
Yes, by a wide margin over time, even though the hardware costs more up front. A safety razor’s blades cost a fraction of a cartridge refill, and even in a worst-case scenario for blade life, it still comes out cheaper per shave than a cartridge system does at its manufacturer-claimed best case.
How many shaves do you actually get from a cartridge?
Gillette’s parent company P&G states roughly 20 shaves for Fusion or ProGlide-style cartridges in its official consumer-care guidance, but reviewer consensus on forums like Badger & Blade puts real-world comfortable shave life closer to 7 to 12 before the blades noticeably dull.
Are disposable razors worth using every day?
Not if cost or waste matters to you. Their low per-unit price is offset by a short usable life — reported estimates suggest only a handful of shaves per razor — and they generate more total waste than a reusable handle with replaceable blades or cartridges.
Is switching to a safety razor difficult?
There’s a real learning curve — angle and pressure matter more than with a pivoting cartridge head, and new users typically get more nicks in the first few weeks. Most experienced wet shavers describe it as a short adjustment period rather than a lasting difficulty.
Bottom line
If you shave often and want the lowest long-run cost, a double-edge safety razor wins clearly once you’re past the one-time hardware purchase and the short learning curve. If convenience is worth paying for, a cartridge razor is fine — just budget using reviewer-reported shave counts, not the manufacturer’s, so you’re not underestimating your annual spend. Keep disposables around for travel and backups rather than full-time use, since their low sticker price hides a surprisingly high real cost per shave.
