For Sale 2001 inverter

I bought an inverter for my prius 2001 recently as toyota misdiagnosed the issue and told me that the inverter is bad, when I checked the car by my local mechanic he noticed that the one of the orange wires going into the inverter was completely loose, so before he putting the inverter he tight the wires and the car start with no problems, i still some time get all the warning lights but the car still drive, i guess i have to take the car to toyota to remove the old codes that are coming back, now i have this inverter i spend $450 for it the guy will not take it back, i want to sell it if some one wants it, it is in good condition the guy i bought it from was saying it has 50000 miles on it, i can sell it for $350 plus shipping.