I would take Psy's advice, no reason you can't return the console to her. Also, the PS3 hasn't scaled down in price like a console in its 8th year probably should have, it's alot to pay for an old system you yourself admit you didn't like.

There's strong rumors PS4 will be even cheaper by the end of this year. It already had Bloodborne, Type-0, and a number of the best PS3 games running at higher resolutions and framerates. I'm not sure what PS3 games you're trying to play but I'd strongly recommend against the old versions of Uncharted or The Last of Us, for example. So borrow one from now then see what the lay off the land looks like in September. I also think you should do MGSV on PS4 as well - if it looks and plays like GZ did on PS4, it's going to be sublime.