Bag of 8 random cogs, Sram I believe - $10
State Bike Co Flip-flop wheel set, take offs with tires, no tubes - $100
Kenda 700x23/25c tubes, brand new, valve stem is too short for my needs - $10 for the pair
Generic single speed conversion kit with 16t cog - $10
Surly 3/32" 20t cog - $5...