I paid $3600 for my 97 L Wagon in 2004 with 150,000. It was a trade-in at a Subaru dealer. The thing had no problems for over 100,000 miles after that. It was bone stock and clean title. Here is the best picture I have of her after the makeover. Now the body and drivetrain has 324,000 miles; the ej25D swap has only 40,000 miles though.
I paid $2700 for my 00' RS coupe 5spd. It has some low speed front end damage and after getting it home and seeing the other stuff needed I have to say I may have paid too much. It will be a fun long term project though. It has 140,000mi.
paid 2k for a 1996 OBS 5spd with 196k miles and some extras like audio, clear corners. Little bit of rust around the windshield and faded hood, couple little leaks but ran great. Bit of a premium on subarus in Colorado. Still running, replaced transmission with a lower mileage one, now resides in canada with my brother at 230k+