I had noticed this as well, did seem lower than I remember. But at the same time a few bugs are around, the +/-3 days tabs up the top mostly say "No flights available" or somthing to that effect, despite evidence to the contrary, and down the bottom below the point summary it informs me I do not have sufficient minimum points in my balance, despite having double the full point price. So not sure what is going on there, bit odd.