That is awful cheap, I paid 17k for my 04 WRX with 72 thou. miles. Then the clutch went out
Congrats on the STI, I would love to have one myself, but I got another year on my loan for the one I have. I bet dad was a co-signer and son started missing payments, that may be all that's left on the loan and he just wanted to get out from underneath it.