I do check after booking , but as the TA usually price match i dont really mind if the holiday has gone up a few bob as i feel as though i had what i wanted for a good price anyway. Its a bit like doing xmas shopping you know that a day after the holidays the items you bought will be in a sale but you have to have it at the time . Have just taken a look now and the accommodation i am staying is not showing as available so i take it its fully booked