I bought a Durst 606 a couple of years ago for £20 plus postage. It came with 50mm & 75mm lenses & boards, plus the neg carrier / glassless accessories. It didn't come with the original baseboard - it should have, but I think the seller struggled to pack and ship it at the price he'd quoted, so I lost out there, had to make a new baseboard. Also the lenses were 25mm rather than 39mm. The lenses were not expensive ones, but were decent, a Schneider componon 50mm and a Durst badged componar 75mm.
It's a nice enlarger, but since buying it I quickly wanted 6x9 and now 9x12cm also, so ended up buying a Durst Laborator 1000. That cost £31, but I had to collect it (no shipping). It's also a heck of a lot bigger and heavier, I had to set up a new darkroom to use it.
The 606 is quite nice to use, not much to break on it either, so if it's complete I'd not worry too much about parts. Quite compact too, which can be important, depending on what space you have available for your darkroom.