Bought an MX360A from DDR for 5,000 all his bikes imported from States. Well overpriced seeing as when received motor pulled down by Dean 'Doc' Harrison and oil seals put in wrong way etc (motor rebuild), tyres shot etc, etc, etc. So cost fortune to get it up to speed. But wanted to race VMX, so was it worth it. Every bloody cent. I would use DDR again, but next time would visit shop and have a look onsite, think that might make a big difference
Bought MX250A of internet for 1000, thanks to Fred Robbins, costs to rebuild etc approx 20000. Absolutely love it.
So I suppose it comes down to how much you want to ride that sort of machine. Cost is irrelevant if you want to ride that model