Those are indeed pricey options and yes it is like a tourist trap and I can guarantee many pay over the top prices as they just do not think there is cheaper options. When i travel for a few weeks at a time I tend to book a shuttle as the Uber is normally too small for the number of suitcases we have and this costs me around $60 each way and is just very convenient which outweigh the extra costs. Even my car finding room for 4 suitcases or possibly 5 is not happening so the cheaper off site parking will not be an option for these trips. The wife shopping always adds an extra suitcase some how.