quick price check....
 

what would you pay for a 45k 04 sti UK with ppp? Also what would you expect to get as a trade in?

If its in good condition with full history it's probably worth about £13K to a private buyer, not sure about trade price but i'd expect about £11K

yep accurate enough.

Some trade buyers would pay 12000 for that of course depends on how many owners and history, condition.

same as some private buyers would pay 14k if it was mint one owner