What is the purchase price?
If the price is right it could be a great purchase.
1. How much are they asking for it?
2. How much are you willing to pay?
3. Where was the bike stored? If this bike sat in a warehouse here in Phoenix Arizona the tires are probably dry rotted and any rubber might be suspect. If in a really humid area such as Louisiana does the bike have any corrosion / flood / water damage? I understand it was in a crate, but, was that crate stored outside, under a shelter or tarp, or inside somewhere?
Also, didn't see anything about the battery mentioned but you can bet that it's shot if it's been sitting there for 4 or 5 years even if it's been in a good environment, ask for a new one or get a new one.
4. Are they going to honor it with a new bike warranty?
5. What are your intentions with this bike? Race bike, commuter bike, weekend only cruise bike, customize bike?