4 S4 Mainboard Repair 1 Keep other 3

I have (4) s4 i9505 mainboards in need of repair.
2 would not power on after being charged with S6 fast charger.
1 other not power on and don’t know the cause
other one has some caps need reset on board and lcd connector repaired.
I would like to offer 3 boards in exchange for 1 of them repaired and returned to me fully functioning.
I am in the UK but am willing to post boards on trust.
let me know of interest posting here.
All come with clean IMEI stickers

Mods if this is wrong section please move to right one.

Thank you.