Meh.

Sale

http://www.tf2outpost.com/trade/25964144 - Sold for a Haunted Ghosts Vintage Tyrolean (50 keys) + Cloudy Moon Swagman's Swatter (150 keys) + It's A Secret To Everybody Vintage Merryweather (124 keys) (324*0.9 = 292 keys, rounded to 290 keys)

Mini:

http://backpack.tf/vote/id/556873b5dea9e949168b4587 - Haunted Ghosts Vintage Tyrolean

http://backpack.tf/vote/id/55687709b98d8820178b4586 - Cloudy Moon Swagman's Swatter

According to C/O, there may have been 50 keys more were offered but none of the keys seem to have been added (according to backpack.tf history). Assuming the deal was changed in the last second.

Feel free to counter / support my proofs