Li Shenron
Legend
Otherwise, whats the point in crafting?
The point in crafting in D&D is always to make the item for yourself, and never to make a profit.
Otherwise everyone will start crafting items for the sole purpose of being able to buy more (typically magic) equipment than they're supposed to have.
D&D is not a game of business! Besides, it is moderately realistic that PCs sell by default at half price. Would you pay full price for something made and sold by an unknown individual, when such item is on sale at the same price in a shop? Or would you buy it from the shop, which is safer, more reliable, and if you get cheated it can hardly run away with it? Someone who would like to be able to sell stuff at full price would probably need to setup a full business, e.g. getting a shop/locale, building reputation, obtaining legal papers, and attract customers. Not something that can happen to a PC who craft a couple of swords every now and then, and if they do it regularly then they should be workers, not adventurers.
All said, you can actually have craftsmen PCs who make a profit, but you should rather use the "make a living" rules for Craft, that give out a more reasonable (small but reliable) income.