Don't forget you have to add in the rental car taxes and fees. While I don't doubt the PP got the $40.00 fee he mentioned, I could not find any near that. I would guess he got a specail rate.
I would also check on just what your home car insurname and credit card insurances cover. There is often open gaps
Like:
1. If, God forbid, you have a accident, and the rental car repair bill is more then your insurances will pay......your on the hook.
2. The days the rental car is being repaired, the rental car agency can continue to charge you your daily rental rate.
3. Usually, You have to pay the rental car bills and then deal with your insurances to get your money back.
The bottom line here is until you have more them 3 or 4 people in your party ,
DCL Trans maybe the better option, if your only 2, then DCL is the better deal.
This includes no driving, no shuttle,big comfortable ride and Disney Magic right from the start. Even if your likely to get to the port about 1300.
AKK