I just bought a TT of ebay and I think as long as everything major works (firdge, AC, etc.) then you are probably ok. Check the condition of the tires, exterior of the camper, and condition overall. Chances are if it's kept in good appearances, the maintenance would have been performed as well. Depending on the age, check inside the basement storage and look at the floor joists above you. Make sure there are no holes behind the wheels, etc.
Open the awning and make sure it's in good shape. Most other things can be fixed rather easily if you need to.
Good luck! Do you have a link to it we can check out?
2007 Coachmen Capri - 300QBS
2012 Yukon Denali Tow rig