Springfield M1A / What’s a good price? Worth $1800?

Quick answer: no

Gun is worth 1200-1300

You can buy 500 rounds of lake city ammo for $250ish

The price in these are insane. They used to sit for 80 bucks a pop in the late 80s and early 90s... couldn't give them away, same as the .303 British and Mosin.. I bought 2 mosins back in 2009 for $80 each with full kits still in grease

National Match M1A's sell close to $2000 new. It's a good deal if it's in excellent condition with the extra mags and ammo. If the action is factory bedded, then it's a National Match. Some have National Match barrels but don't have bedded actions. Those are not NM rifles.