Bought a boat 3 years ago from a seller in Tennessee. Im a resident of illinois. Had no problem with paperwork or transferring title or anything. All of a sudden i get a letter in the mail stating they are auditing my boat purchase because i paid below "fair market value". The motor was blown and the boat now books between 11k-15k the tax auditor told me. My bill of sale states that i purchased the boat for 6k. I spend 4.5k on motor rebuild and have receipts. The auditor asked if i could mail that to them to prove i had work done. Also she wanted my bank records and my withdrawals. I said i paid cash and my withdrawls arent accurate because i took out money to pay for the rebuild. Had anyone encounteted this and am i gonna get screwed because my boat is worth more than i paid for it? Like...its my fault i got a good deal? Thats why i bought the damn thing. I guess im curious what my realistic options, and expectations of this process are gonna be? They want all my receipts, registration, insurance info, bill of sale, bank statments.... Im like... That was 3yrs ago. I dont know where that sh*t is. I luckily found the bill of sale in with my title. But jeesh! What is a guy supposed to do????