Doesn't surprise me. From what I've seen the last year or so they are regularly in that range. I guess with your sales tax that's pushing a new unit into the $4700-4800 range so people are looking to save $1500-1800 and hope they get a decent unit.
I just finished going through the first 251 I brought home....cleaned inside/out, aligned the drive rolls, added a new torch, new work cable and clamp, new flow meter and hose, fresh 44lb spool of .035" wire, and tested it to include running a spool gun. The outside paint shows some scratches and normal shop wear, but the inside is still clean...it's not minty, but not trashed.
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