This seems like a good deal to me, though it might be of intereset.
Flights are from thomsonfly.co.uk for 21-28 November flying from stanstead to fuerteventura, total £296.94 for 3 people.
Accomodation through http://www.thomson.co.uk/hotels/hotels.html
search for apartments for above dates for corralejo in Fuerteventura for 3 people £49 for the week stay, total for holiday for 3 people £345.94.
accomodation called Fiesta Corralejo Garden Apts.