I won my auction on January 5th, and immediately received an email providing me with instructions on how to submit my requested dates. You are only obligated to pay if they can secure your requested dates (based on what is listed as being available on the auction).
Once availability was confirmed, I was sent another email with instructions on how to pay the amount due (the amount of my bid). I submitted the payment the same day via credit card.
On January 6th, I received email confirmation of the fulfillment of my booking, which outlined the resort name, villa size, travel dates, and legal terms of the booking (non-refundable, that a passport is required for non-US citizens to enter the USA, etc.). That email listed a fulfillment number, the offer number, and a confirmation number.
Within a couple of days, I received an official three-page Confirmation Certificate that listed all the reservation details again (in a much prettier, fancier, colour format) that also included a Reservation Number.
I thought that the Skyauction Confirmation Certificate looked remarkably similar....identical, even.....to the confirmation certificates issued by Interval International when owners do an exchange.....but the Skyauction certificate noted that travel was provided by Worldwide Vacation & Travel (not Interval International). A quick Google search found this:
The resort accommodations reservation program powered by intervalworld.com is provided by Worldwide Vacation & Travel, Inc. d/b/a Interval Travel (WVT), a Florida corporation with a principal place of business at 9995 S.W. 88th Street , Miami , Florida 33176 on behalf of Interval International, Inc. (INTERVAL), a Florida corporation with a principal place of business at 6262 Sunset Drive, Miami , Florida 33143 . WVT, INTERVAL and its affiliated companies shall be collectively referred to herein as the "Providers".
http://www.intervalworld.com/web/cs?a=60&p=terms
So I'm not crazy! (I did a couple of exchanges in 2014, so I had seen those confirmation certificates before). I guess that's why I am very confident that everything is on the up-and-up. I am reasonably certain that Skyauction is used to help unload unreserved exchanges under Interval International's system. Everything went smooth as silk for our exchanges, so I am expecting nothing less that that for our May week

.