I agree. It is much more expensive when you drop off at a different location.
The best pricing I have ever found for car rentals is through Costco.com. If you are a member, they have the BEST pricing. Mke sure you use the "Low Price Finder" it will search all the Costco deals and show you the best pricing.
I have a Intermediate SUV reserved for this weekend, 4 day rental and it was only $74.00 total price. Not Hotwire or Priceline could beat that pricing.
Oh, and you don't have to be a member to check the pricing...you only have to be a member to make a reservation.
Good luck to you.