At BorrowLenses.com, they rent out professional photography equipment locally and by mail all over the USA. Not everyone can afford the high end lenses or photography gear but now everyone can “borrow” them. From photography pros to shutterbugs they cater to your camera gear rental needs. They don’t just have lenses, but all kinds of flashes and other A/V equipment.
I’ve used them and highly recommend their services. It’s great to be able to test drive a piece of equipment at a completely reasonable price before making a high-ticket purchase.