He answered in a comment. It was about 300 USD in parts but he's not sure because he'd spent a lot of money gearing up to try to populate a bare logic board pcb by hand before someone talked him out of it.
Yeah but as I said a lot of those tools were for populating a bare logic board though that he didn't end up doing because a repair shop told him he could expect to waste 4+ boards before making on that worked so I don't really think that's part of the cost of the phone since they weren't used in the final product or making it.
