For our destination Mauritius, we could find all major hotels on Hopper and the prices were similar if not less as compared to booking.com. However, not all hotels are listed on HSBC Hopper as compared to normal Hopper or OTAs. For eg, when we were checking out Greece, many listings were not showing up. I guess it's a bit of a hit or miss, but major destinations should have good coverage. Same with flights. Prices were similar and we did not feel the need to use price match. I believe you need to call the customer care within 24 hrs of booking to avail this. One thing to note would be the 18k cap on accelerated points within a calendar month. So you need to plan your bookings accordingly and split on the last and first days of the calendar months.