I've been "shopping" for a plow plane for the last year or so. I saw many #45s and #50s and similar for sale but many are incomplete and/or fairly rusty. They can be very complex planes, so evaluating them was tough for me. Anything nice was $250 and up anything in the $100-$125 range was suspect or obviously problematic.
Since All I really want to do is make drawer bottom grooves and the like, I even searched for orphaned t&g groove planes, weatherstrip planes and so forth. No luck. Today I gave up on searching the auction site. I bought a Record 043 in really nice condition from a dealer. It's complete and should excel at the one thing I want it to do, make small grooves without using my electric router.
-- Dan Rode
"We are what we repeatedly do. Excellence, then, is not an act, but a habit." - Aristotle