Just use this and make your own changes in there and donate your money to him.
if you want to buy a pbo from someone...well let's say I wouldn't sell mine under 700$ ;)
Origins Vehicle Upgrades
what it does?
This is the vehicle upgrade Script from the Origins Mod for the Origins Vehicles.
Note: This version lets you upgrade everything with one scrap metal. I will release and update soon where you can decide what materials and tools are required for each...
but with characterID you are only checking for an existing character and not a player.
You need p4l to get stored the playerUID in the database so you can check for players buildables and not of an single character :)