I can get a non matching serial numbered Springfield rifle for $500 straight from the gov-ment. Conditions on these rifles vary. I think they strip field them, inspect them, and test fire them, but beyond that, it's anyone's guess as to what you get.

It'd work, but there might be big pits/chunks missing from the wood, offcoloring, heavy use wear and tear, etc.

Don't really want to play the M-1 lottery.

If you want the serial numbers to match, it goes up to at least $1500. Sounds like this is what your buddy has.