Marriott also will repurchase at times. The main reasons most developers won't repurchase is they've have to sell again. If they have sold out the property, not worth fooling with. If they haven't, then it's competing against themselves. Points programs are unique in that it's the only legal way I kinow of to sell the same unit more than once as a "new" unit, at least in the US. The $55 per point is in the range where they'd need to do so to make enough money to make it worthwhile. If Disney started a resale program, 35-40% commission is the expected range.