This product is superb.
The first thing is that it keeps your razor blade (Mach 3 or whatever) sharp for months. This makes for quicker shaves that are free from nicks and razor burn. It is very simple to use. After each shave, all you do is put a little foam on the RazorPit, and push the blade across it four times. It takes about 5 seconds.
This could save you £50 a year if you shave every other day, almost double that if you shave every day.
Given that 8 Mach 3 blades costs anywhere between £12.50 to £18.00 depending on the stockist, everyone who shaves using a blade should get this. I find I can get about 2 weeks (6-8 shaves) out of one Mach 3 Blade. That's 26 Mach 3 blades a year costing anything up to £56. Using the RazorPit Teneo, one Mach 3 blade lasts me almost 4 months which is around 60 shaves, more or less. This means that I will only need 5 Mach 3 blades for each year. With the RazorPit, a years supply of Mach 3 blades costs just £7.50 (at Amazon's pricing), a saving of £48.50 (against High Street pricing). The Razorpit unit costs £22 which means that it pays for itself within 6 months.
If we take a five year cycle, someone not using the RazorPt would spend around £200-£280 on Mach 3 blades. Razorpit users would spend just £37.50 on Mach 3 blades. That's a saving of up to £242.50 over five years, not including the £22 cost of the RazorPit itself. Given the savings, this is a no brainer. Buy this product. It will save you money as well as bring an end to annoying nicks and razor burn.