It's a bit more work to evaluate a custom boat. Low buying price usually means a low resale price when you eventually sell. Try to consider that differential when comparing boats. On the other hand, less investment up front means less exposure to market fluctuation on the back end.
The boat may be custom but the major components (engine, head, galley, electronics, spars) will usually be off the shelf.
Look at the age of the boat, what shape it's in, any maintenance records, how it was used. If the boat is 20 yrs old in continuous use and in great shape, chances are it's solid.
Consider the designer and the builder, what reputation is there on them?
One advantage is that you're never going to see the boat derided in a forum like the Macs or Hunjenbenacats.
Last edited by CapnHand; 09-30-2007 at 10:34 AM.