"...on here..." That'd explain it. Some guys think their rifles are worth more than they really are.
"...on a low budget..." Got a price range in mind? You insist on a .270?(not really a bad idea. It'd give you a deer/bear/moose rifle too. A .22 centre fire won't.)
Epp's is listing a used Ruger M77 is .270 at $499. No sights. A Parker-Hale 1200C with a scope, in 6mm Rem, for $499. A Lakefield 93M .22 Mag, with a low end scope, for $229.