Saisunil, do you have an external HDD? If you have a timemachine backup from it, it should not be very difficult. It can save you some bucks. I do not think that the places where they do these swaps do data migration....so, they might charge you to simply swap HDDs and unless you got a decent deal on a SSD HDD, you might have to expect to pay them for what they offer....and on top, pay for labor and then have data migration happen. I would look into swapping the HDD on my own. But in NYC....Tekserve is the place. Call them, they are off 24th street.