supra wont turn over

[Supra_Freak_7m]

When I got my turbo supra, the car had been driving all day so, I test drove it around for about an hour and then pulled up to the owners house, hopped out gave the dude the money, did the title stuff and went back out to the car hopped in, turned the key, CLICK! nothing, jumped it, CLICK! nothing. Got my friend to tow the car home, looked at where the starter was and said FU*% THAT. I took the battery to the store to have it tested, tested good. Went home looked at the battery cables, they looked good, but I decided to take them apart anyway, cleaned the inside of the terminal where it actually touches the bare wire, and started right away. Just though I would share that with you