Saw a rusty one sit for sale in CA at $500 for many many months. If in good shape I’d ask $650-$700, more of you’re including the casefeeder.
I do love mine, have dies for 9mm, .40 and .45.
He has been working on the 200, it sizes two pieces of brass with each stroke, one on the pull and one on the push. Not sure how the release of that machine will affect the value of the 100s.