Before selling, if you really want to save the $ from taking a bath, I'd strongly recommend staying on top of tranny fluid changes.
A co-worker of mine has an 04 Acura TSX, one of the notorius years for trans failures. She has stayed on top of fliud changes and her trans is shifting like butter with NO signs of failing (and she's at 150k miles, most have failed by now).
She recently thought it was failing on her, but after a trip to the mechanic, it was determined it was just her engine mount that was bad.
maintenance is still key to reliability