Do you mean specifically the Springfield Armory M1A, or are you including other civilian M14 clones?
I saw a Federal Ordnance M14 for $900 at a shop today, and was momentarily excited until I got home and read that Fed Ord has a really spotty rep.
There's also Norinco (also called Polytech), which has some good parts and some middling parts, but you can read online about the standard way to keep the best and replace the middling and end up with a really solid rifle for a good price.