Using a Best Buy $39.99 Sonicare 4100 snapshot, Philips' $26.95 suggested retail for a 3-pack C2 Plaque Control head, and SURI's current direct prices, the default three-year model estimates $138.81 for Sonicare versus $158.88 for SURI. This is exactly why we expose the inputs: Sonicare retail discounts can be large.
Price comparison
| SURI Pro 2.0 | Sonicare 4100 | |
|---|---|---|
| Current handle snapshot | $89.25 direct promo | $39.99 Best Buy snapshot |
| Head benchmark | $18.99 / 3 | $26.95 / 3 C2 |
| Pressure sensor | Yes | Yes |
| Travel/battery proposition | SURI emphasizes roughly month-long battery and optional UV case | Sonicare 4100 retailer listing cites up to ~14 days |
Decision rule
If you can buy a Sonicare 4100 near the current sale price, it is difficult for a premium brush to beat it purely on ownership cost. SURI's case is therefore not “cheapest brush”; it is design, battery/travel convenience, sustainability positioning and lower head cost.
Run your own SURI vs Sonicare numbers
Retailer pricing is volatile. Replace the defaults with today's checkout price before deciding.
| Brush | 1 year | 2 years | 3 years | Assumption |
|---|---|---|---|---|
| SURI Pro 2.0 Verified 2026-09-06 | $108.24 | $133.56 | $158.88 | Replace every 3 months. Source |
| Philips Sonicare 4100 Verified 2026-09-06 | $66.94 | $102.87 | $138.81 | Replace every 3 months. Source |
Change the assumptions
Use a preset, then change any number. This is a cost model—not a recommendation about how often a dental appliance or brush head should be replaced.