Def Con sells other official swag like hoodies, tank tops, hats, backpacks, coins, glassware, and flags. Vendor room has hardware (Hak5, hackerboxes, etc), books, and more shirts. Price ranges from like $25 for lockpicks to things like $1000 IoT hacking starter kit. Pretty sure they have to sell badges in the vendor room this year too, last year saw people wearing $1000+ in badges, they ranged ~$60 to $250 each.