The cost of a TT is whatever the dealer will sell it for and of course whatever the buyer will pay.
There are three things I do when shopping for a major purchase.
1. Never buy on the first trip. Let the dealer know his is one of the your final selections.
2. Make sure that the sale price includes all taxes, fees, preparation charges, etc. I bring one check and the number we agree on is what goes on it. Any thing else comes out of their pocket. I tell them this up front.
3. Stay within budget, it is a hobby, it should not be a financial burden. Also, the resale value drops like a stone.
Good luck
