I have booked numerous excursions prior to departing the UK, and never been asked to pay an increase. Nor have I ever seen anything in writing, or been informed on booking, that prices might fluctuate. I have always assumed that once paid the pice is fixed. I'm quessing currency fluctuation is the excuse: certainly something to bear in mind when prebooking future excursions. It would be useful if JY clearly 5 stated the policy on price increases. Is this likely to happen to future tour prices?