HP dv5-1015tx is available in 65K including taxes. this is much better than XPS 1530 price of even XPS will go above when including the tax.
You can also check Dell Studio laptops 15 inch or 17 inch whichever you think is good for you they will come in less than 60K total
try getting 64-bit OS and 4GB RAM than what they would be giving i.e. 32-bit OS and 3GB RAM
also check with them if you can install Linux on them, they are standard laptops coming with windows OSes, and you would want to install Linux also