A lot of people have offered to not get a refund, which is amazing.
I hope that more people end up doing this and that the tier2 buyers could also upgrade to tier3. There is only a $19 difference between the two tiers which is relatively small for the individual GB participant, but if this cost gets unloaded on the organizer, it would be a significant burden. LeandreN already puts a significant amount of work into the buy and I'd like there to be future rounds of his buys!
I realize that it is probably also unfair to GB participants to have sudden price changes, but then again, this isn't a store, so some hiccups should be expected (see the stickied posts).
I realize that I am quite new here, and hope I don't offend anyone by saying this. LeandreN and the other participants are free to make their own choices, of course!