Macbook Air vs. Macbook Pro - non retina

Is the macbook air worth $420 more. Please look at these specs and tell me what you think?

MacBook Pro, 13-inch
Item Price: $1,179.00
. Hardware
•2.5GHz Dual-core Intel Core i5, Turbo Boost up to 3.1GHz
•8GB 1600MHz DDR3 SDRAM — 2x4GB
•750GB Serial ATA Drive @ 5400 rpm
•SuperDrive 8x (DVD±R DL/DVD±RW/CD-RW)
•Backlit Keyboard (English) & User's Guide
•Accessory Kit


Vs.

13-inch MacBook Air
Item Price: $1,609.00
Hardware
•1.3GHz Dual-Core Intel Core i5, Turbo Boost up to 2.6GHz
•8GB 1600MHz LPDDR3 SDRAM
•512GB Flash Storage
•Backlit Keyboard (English) & User's Guide
•Accessory Kit

 

knocks off $270 if go with smaller hd. why is the hd so much to upgrade? The price is closer then, with the air being 150 more. What do you think then?