The service history of that van looks a bit sketchy in the ad.Not sure how accurate the ad is but it only says serviced at 26k and 48k?If so I would stay well away, and if you study the photos carefully it looks as if they probably have had that van since the summer.Be cautious!
The service intervals on the custom are 30000 miles or 2 years so the history isn't sketchy .Personally I think long intervals like that are crazy but it's still a full service history van .
Custom is every 30,000 miles or two yearsThey also suggest an interim service every year which is basically a safety and levels check. You don't need to have this to validate your warranty. My custom will be 3 years old this year and will have been serviced 2 times. 2 years is miles too long in my opinion.
Why don't you have a quick google before making stupid comments?