Purchased mainly for solved problems with easy understanding (SChand books are perfect choice for this). Unfortunately SChand books are not getting new ISBN's whenever new edition gets released. So it is hard to distinguish editions based on ISBN numbers.
The book I ordered has an MRP of 290 (against what flipkart has shown Rs475/-; Number of pages also didn't match as show at flipkart site) and my invoice amount is Rs.250 + Rs 50 for shipping.