Having found a holiday on Travel Supermarket with the above for £244 pp - a brilliant deal - I clicked the link to go to the website. The price was exactly the same as advertised on TS but when I went to the next step, it shot up to £497 pp. I tried again today and it was still the same. I phoned Mercury Direct who more or less fobbed me off telling me the correct price was over £1100!! (for 2 people). Also making me feel a fool for believing THEIR advertised price too lol.
All extras were included in the original price too.