Dont do it ! Cabair have a number of ways of parting you from much more of your cash than you need to spend , you will find them using all sorts of "club rules" to restrict your flying and make it more expencive add to this landing fees ( at elstree it is £ 10 including VAT cabair will charge you £ 10 plus VAT ! ) extra charges for talking to instructors for more than a set time , positining aircraft on your wile you are under instruction and to all this they add VAT.
There are a number of good places to fly that will not rip you off and have clear and ethical buisiness practices .
If you go to the British airways flying club at wycombe the price is fully inclusive , the cabair price may look better on paper but all the add ons will leave you weel and truely out of pocket.
I would recomend that you take a look at both the BAFC and the WAC at wycombe WLAC at white waltham and the LFC at stapleford all these places have a good reputation and clear pricing structures.