From the site...
Dry clothes more quickly and efficiently
Costs less than 6p per hour to run
Cover keeps heat contained to speed up drying
Washable polyester cotton cover turns into a practical storage bag for your folded airer
Holds 15kg of wet washing on 21m of drying space
It says online only, however I have phoned two separate stores (in different counties) and both have this offer in store so seems national.
Uses about 5p an hour compared to a tumble dryer that can use around 50p an hour. The cover helps keep the heat in to dry quicker. Being the deluxe model it has a built it LCD timer and seems to be a bit more sturdy than non deluxe model. According to reviews the condensation is minimal, ESP with cover on.