I'm looking at a used DeVere 504 enlarger and am new to the enlarger market and not sure what they are worth these days. I've not seen it, but the owner indicates that it has a color head, condensers for medium format and 4x5 and is in good shape and functional. He has an extra bulb for it, but doesn't sound like it comes with any lenses, negative holders, etc. He's asking $800 for it. I've heard that these are very good enlargers, but have no idea how they compare with a D2 or other enlargers I've been looking at for substantially less money. Any help is much appreciated.