Harbor freight has a nice electric lift that plugs into your pickup truck trailer hitch receiver. It is really well made and is currently on sale for only $199 (was $399). They claim it will handle 500 pounds, and I believe it. If there is a weak point, it is the power of the electric winch.
My only complaint is that the plastic bags of bolts have numbers that bear no relationship to the item numbers in the instructions. The sizes are printed on the outside of the small-parts box, but not on the parts list. If you buy this lift, you need to *carefully* measure the bolts and match them up with the correct part numbers before you attempt to assemble the lift.
While Harbor Freight sells a lot of cheap crap, this is one of their better products. Be warned, it is heavy (145 pounds)! Your UPS driver will not be happy with you. :-)
Alan