That is correct curzer, there is no difference. If you have already paid the 35 dollars for the year its the same thing. Just don't renew it and when its up you can just get the TDH one.
I actually just used the TDH account there yesterday and got what would have been about $40 worth of stuff for about $30. Not bad at all. The cashier did say the account required a TDH membership card, so you all might want to wait until you get the card before using the account.
The cashier was trusting, but I think it was just because no one but a true geek would go in there admitting they make SW costumes to get a discount on leather.