if you are getting that one for less than 1 lac then good otherwise go for a brand new one, it costs 132,000 for new 13 inch 256gb flash model. there isn't a huge difference in performance unless you do really do heavy tasks like 1080p video editing or any heavy game, new has has stuff like usb 3.0 and a warranty that a used one will lack.
not to mention new one will feel faster as it will be brand new and you would only install apps of your choice, plus it will already come with OS X Yosemite