Because the deal was posted over a month ago and prices have changed since then.
Why when you go to the deal does it state a completely different price?
Yes, the deal was posted over five days ago. Still some good prices to be had though.
Prices have gone up now, Inquired about deal for £233 on web site now, spoke to travel agent over the phone now £297 :-(
https://www.gov.uk/foreign-travel-advice/tunisia "The annual Jewish pilgrimage to the Ghriba synagogue on the island of Djerba is taking place until 10 May. Expect a heightened security presence during this period."