Two things I learned the hard way on getting a walking or running shoe.
1. Not all shoes size are equal. Hence, certain company try to solve this using through a conversion API by shoefitr.com to help merchant to let customer find the right size.
2. Minimalist or zero-drop or barefoot shoes have very short life span. How short ? Average around 250 - 300 miles or 402 - 480 km before the outsole wears out. Think twice before you fork out USD 100+ or MYR 300+ to buy them.