Economies of scale are alive and well with solid state drives, or “SSD”s. Apple is now passing on savings to those who purchase MacBook Air models with 64GB SSD drives. Yesterday: MacBook Air 1.8GHz SSD $3100, Today: $2600.

13-inch : 1.8GHz
	Intel Core 2 Duo processor
	2GB memory
	64GB solid-state drive1
	Built-in 802.11n Wi-Fi2 and Bluetooth 2.1 + EDR
	Ships: 1-3 business days
	Free Shipping
	$2,598.00

via Ars

For $999, is it worth it to upgrade to less hard drive space?

Yes, if you boot often or rely heavily on reading data from your portable’s drive.

AppleInsider has very interesting tests between the 80GB (traditional) and 64GB (solid state) hard drive choices in the MacBook Air.

For users to whom cost is not a big deal, the SSD option paired with the processor upgrade delivers the fastest possible experience, with significantly faster booting, application launching, and shutdown, and with no spin up lag even when working from the battery in power saving mode. Everyone else will need to weigh their needs for delicious luxury with more practical considerations such as storage capacity and budget.