When I took an Uber last month, it was about $36 (before tip) from the GF to MCO. What's nice is that she dropped me off at Southwest's curbside check-in, making it a pretty easy trip.
This is a good point. We use Uber in Chicago often and the surge pricing can be out of control. I was concerned that during our 5 nights in WDW this might be an issue, we were lucky and did not experience this, but it is something to consider.Some other recent threads talk about 'surge pricing' which apparently means your charge could be higher based on demand and/or availability. There are other available shuttle services where you can book them online and see the pricing ahead of time. Never used them, so can't comment on how one might compare to the others. Clearly ME is free while any other transportation option will involve an additional cost.