Is buying a Macbook Air worth buying? or is it only for vanity purposes?

this one is selling for 50K pesos, is it worth it? 7 months used with specs:

Model Name: MacBook Air
Processor Name: Intel Core 2 Duo
Processor Speed: 1.8 GHz
L2 Cache: 4 MB
Memory: 2 GB
hard drive : 80

come with External CD/DVD
and wireless Mac mouse and wireless keyboard.