I recall this being debunked (at least for airline tickets) completely in a stack exchange thread that was posted here a while back. I'll add the links if I can

I recall this being debunked (at least for airline tickets) completely in a stack exchange thread that was posted here a while back. I'll add the links if I can locate them. Edit to add links: [1] http://travel.stackexchange.com/questions/2952/flight-tickets-buy-two-weeks-before-even-during-holiday-seasons http://travel.stackexchange.com/questions/2952/flight-ticket... [2] http://blog.getinvisiblehand.com/2011/04/08/ryanair-manipulating-prices-with-cookies-it%E2%80%99s-an-urban-myth/ http://blog.getinvisiblehand.com/2011/04/08/ryanair-manipula...