You raise an important point and I hadn't thought about the dumping being related to those who have no stake in a cub farm or den.

The 2% fee isn't enough to make up for the dumping especially when most of the funds are locked in non-cub farms and dens.

There needs to be another mechanism to drive up cub demand because I don't think there'll be that many users clamouring for cubs as they are on a daily basis.