No joke.

Sale #1:

Sold for $34.99 (seller received $30.43) on the market.

http://i.imgur.com/3qGHvjs.png

http://backpack.tf/item/3355632968

12-14 keys at $2.49 per key.

Sale #2:

Sold for $34.99 (seller received $30.43) on the market.

http://i.imgur.com/NVdlo1H.png

http://backpack.tf/item/4185517089

12-14 keys at $2.49 per key.

Sale #3:

Sold for $34.99 (seller received $30.43) on the market.

http://i.imgur.com/gp1QPS7.png

http://backpack.tf/item/1333889117

12-14 keys at $2.49 per key.

Sale #4:

Sold for $34.99 (seller received $30.43) on the market.

http://i.imgur.com/Im3EPq8.png

http://backpack.tf/item/3355632968

12-14 keys at $2.49 per key.

Sale #5:

http://www.tf2outpost.com/trade/27669036 Sold for 11 keys

http://imgur.com/a/uuJep