If time is of essence, we may be better off with a 1-360 type of raffle.
We can also get Mispacha or Ami or someone to bash the whole idea of trips to Antarctica, they can then add that it's not enough that some rich gashmiusdik blogers are going but that even regular Kollel yungelit are being tempted due to a raffle on DansDeals giving away a free trip. That will sell out all the tickets for sure!