MARVELous Offer. Book either of the MARVEL Bouncy Castles for any date in May 2018 and receive a discounted rate. The Marvel Castle With Slide Down from £90 to only £80 and the Marvel Castle Down from £65 to only £60. Venue must be within 15 miles of Lewes Town Centre and subject to availability. Offer finishes Friday 23rd March 2018 at 9pm.