Taken from their website.

Booking fee/fuel surcharge/ccharge from £0 to £39 per person.

We were charged £29pp on top of the prices you see on their website on our last flight with them from Newcastle.

http://www.maltabargains.com

They have recently increased their booking fee from £29.00 p.p to £39.00 p.p. However if you book for more than 7 days then you can expect to be charged an extra £10.00 p.p. If you book for more than 14 days then expect extra charges of around £30.00 p.p.
Also do not exceed their luggage allowance as they will charge you a fortune!

Incidently GB Airways flights from Manchester have all been cancelled from 1/11/06 onwards!