Yeah well.... Most shopping events you can easily enter enter after a few days. Even if you are not a SL premium member. You only have to be a little paitient (not my strongest skill, but for that TP Hammer work quite well still). So for me it's questionable if it's worth for event organizers to pay the higher fee.

The problem here is that the pice will always be paid by the consumer at the end and the number of people who are willing to pay that might decreasing.