shoes have sizes + colours, plus are fairly small boxes.
wheels are large, come in a combination of sizes (#'diameter x #'widths x #'PCD x #'offsets = a f**kload). how can you have wholesale if most of it is made to order?
I inquired because wheel manufacturer brochure says wheel cost 90,000yen for example, but can buy brand new on yahoo auctions (in any offset you want) for 48,000yen.