If we do some basic math together, we can solve this problem!
How much does this game cost without tax? $60, right? Okay, now, how much is $60 - (minus) $55? Omg, it's $5, the amount of the pre order charge. Go to Origin, and put a Standard TOR copy in your shopping cart, you will see 54.99 and 5.00 = 59.99. It's amazing, I know.
*P.S you didn't pay extra.