"Decent watch": Sellita SW200 movement is $130 qty 1, call it $80 qty 500 basic bitch hands is $2/set, call it $1 qty 500 basic bitch screenprinted dial is $4 qty 1, call it $2 qty 500 basic bitch stainless case is $75 qty 1, call it $25 qty 500 (they're $30 on aliexpress) basic bitch alligator strap is $7 qty 1, $1.40 on aliexpress, call it $1 Materials costs: $106 qty 500. I could throw that shit together in about 10 minutes, and could teach you to do it in 10 minutes if you gave me an hour. So we'll take a decent rate of $18/hr and divide by 6 and we're at about $115 cost for a swiss movement, chinese everything else. Double it for a profit, sell it for 60% of MSRP to dealers and lo and behold look how fucking overpriced everything Shinola ever made is because they don't even have mechanical movements. Whatever you do, don't run the numbers on a birkin.