Best Buy quietly cut $100 off all models of its MacBook Air 2013 line of light laptops.

The price rollback dropped the price of Apple's less-expensive 11-inch Air to $799 this week. This applies to the 2013 Macbook Air model with 4GB RAM and 128 GB SSD.

Other retailers such as MacMall has also slashed its prices.

This is beacuse Apple made a few tweaks to the 2014 MacBook Air system. The most noticeable improvement was increasing processor speeds across the board. The current top-end 13-inch MacBook Air has a 1.4GHz chip compared to the previous 1.3GHz dual-core Intel Core i5 processor.

The price cuts narrow the gap between the 11-inch MacBook Air and an iPad Air with 128GB of storage to $100, which will likely lead to the iPad cannibalizing Apple's notebook sales.

The low-end 11-inch MacBook Air now sells at the same price as a Microsoft Surface 2 Pro with half the MacBook Air's storage space and without a keyboard. With a keyboard such as the Type Cover 2 and 128GB, a Surface 2 Pro costs $1,128.99. That's enough to buy an 11-inch MacBook Pro with 256GB of storage.