Lord Platinum works great for me. US$ 6 each 100 here in Brazil.
Wilkinson Sword from India, US$ 18.8 for 330 blades shipped at eBay. Or Gillette Permasharp Stainless (indian greens) from same vendor US$ 11.8 for 200 blades. Isn't everyones favorite but very good for me.
Haward Razor blades US$ 4.92 each 50 shipped from Aliexpress is also good.
BICs for me are poor's man Feathers. Amazing if paired with a mild razor. More expensive than listed above but half the price of Feathers and long lasting.