Can't help you with your venture into the Mach3 resale business but you can get triple blades with Aloe Vera and Sunflower Oil stripe on disposable packs of 5 pretty damn cheap, fill your basket with about 4 packs or so.
That's in Lidl, I should add!!!!
While you're in there, check out their Chicken Breast packs, 4 per pack, pre-marinaded, absolutely delish, £1.49 or so but heaven on a plate, just had three with a big helping of steamed veg and mixed leaf salad...damn I feel my bi's expanding already!!
Good food is like good sex - to be savoured looonnnnnng and easy...
Keyser.