I beleive a car service will be about $80 or so each way. It is more expensive to get to WDW from Sanford than from MCO. I know that for us to get 6 of us, we were going to book a van, but the driver showed up in a true limo..for the same cost. But that was a bit over $200...just a car for up to 4 might be a bit cheaper. That's without tip also.
Time-wise, it takes about 45mins to an hour, depending on traffic.