2009 Corolla - $20K on the button. I don't think $8K retail would be out of reach - it's very clean and well maintained.
likely fine...a few years ago (2012-ish), a coworker of mine sold his 2000 Corolla, rusty bucket of crap, with over 300,000 kms on it for $5k (sold in a day)...some kid from out of town bought it because "they last forever"...sucker born every minute.
considering he got $5k for his car (mechanically fine, but looked like a junk yard car), you can likely get more than $8k...his car was also the absolute base model you could get...manual transmission and manual crank up windows...it was the "priced from" model...likely few around considering such a base trim is likely not sold very often.