I already said this somewhere else, again, at 190$ it really does not make sense to order separate movements when you can have the entire watch at less than 400$
the cost of an insert alone is already more than 100$ when bought separately, a bracelet maybe 100, crystal 60-80, dial 60, case definitely more than 100. With all those separate parts prices, the movement is already free of charge. I dont encourage profiteering, but taking out the movement and selling off remaining parts at reasonable prices (maybe 50% of what td would charge) in relation to an assumed realistic movement price of maybe 100$ is a win win situation for everyone here. You dont overpay ridiculous money for a chinese movement and members can get spare/upgrade parts at reasonable prices.
At least i would be happy to see the parts section flooded with cheap new parts, just as many others would be as well.
As long as your pricing is transparent and you dont end up with a free movement or even excess money, this should be perfectly fine with sales regulations here.