We were faced with a choice:
1. Postpone the release of add-ons until the release of the game on Steam.
2. Release add-ons for free.
3. Release add-ons for a fee.
The 3rd option is cool, I don't argue, but it can always be a fallback.
The 1st option is also good, but given the fact that the additions have already been shown for 2 years in a row, it would be nice to finalize them and still release them.
We decided to choose the 2nd option and sell the DLC at a specific price. Again, the price is not $50, but only $2.49, and we believe that this price can cover the cost of creating this event.