Usually the larger contracts go for less per point since most buyers are looking for add-ons at this point given the deed expiration date and just market in general. Also, the higher point ones are more likely to be bought back since they can split it up. Remember, ROFR has a lot to do with the unit number and point availability as well as the cost. I noticed (from the ROFR thread) that your contract is stripped until 2017 which is another reason Disney probably didn't want it back. They'd have to hold it for at least an entire year before they could sell it since direct-sale contracts have points available immediately. (That's not required, but it's their policy which makes sense. It'd be tacky for Disney to sell a timeshare that "starts in a year and a half".)
The contract I bought has 81 points from 2017 borrowed into 2016, so while it works just fine for me, it'd be messy for them to resell:
ScubaCat---$99-$36,147-350-BCV-Feb-0/'15, 206/'16, 269/'17, sent 11/10, passed 12/11
They held it for 32 days, though, so they were probably trying to see if it would work for them and then finally gave up and passed on it. I figure that they could split it up and have 250 "clean" points and then use the rest as one-time use points or something, but I guess it was either too much hassle, risk, or they didn't need the specific unit number to fill anything on the wait list that the deed was for. I feel pretty fortunate because on the OCC site, I see deeds recorded in the past couple of weeks where they exercised ROFR for 300, 400, and 500 points respectively. Considering the long delay, this must have been sitting on a knife's edge and I eventually lucked out.