This is an intermediate level deal, so please be sure to pay attention to all the details! Borrow Lenses has partnered with select Sony Style brick and mortar stores for this two-step promotion.
Step #1: rent Sony Alpha or NEX gear from Borrow Lenses
Step #2: take your Borrow Lenses rental receipt at select Sony Style brick and mortar stores. The receipt will get you a discount towards a Sony purchase at the Sony Style store that is equal to your rental receipt amount or up to 15% off the purchase price of the product you are buying at Sony Style (in other words, your discount won't be larger than your rental amount, and it won't be more than 15% of your purchase price)
For details and questions and the list of participating Sony Style B&M stores, check the Borrow Lenses blog.
You might be able to stack the above deal with the American Express $25 statement credit promotion. I have no way of testing this, so YMMV.