I thought you could only hire them, a bit like bouncy castles.
Why don't you try somewhere like Headcorn airfield in kent, that is where the public can go an do a parachute jump for charity etc. They must have some old ones and I am sure that they would be glad to sell them, however I remember although they were the round parachute shape they were plain white....just a thought.
Are you talking about the big ones used for parachute play? If so try www.swissfridge.co.uk who do Little Life parachute play mats, smallest starts at about £25 IIRC. Was going to get one myself for the garden this summer, they look cool!
Usually sell them in schools equipment catalogues- look under early years or special needs sections. Do you have access to these catalogues at school? Most companies will let you order as an individual.
Hulababy - we did buy one from ELC last year, and I think it was about £15. It's quite small - 8 handles I think - and not as robust as ones I've seen used at schools and in groups. But fine as a 'family' toy.
BUT they did have supply problems with it last year. It was in their spring/summer catalogue, but was not actually available until 10 May. (I know because we wanted one for ds2's birthday party on 8 May and had it on order for monthes ) So I'm not sure they will want to re-stock after their experiences last year.
You could try Fledglings at www.fledglings.org.uk Although they supply products for people with special needs and disability I don't suppose they'd mind. I got one from them but can't remember how much it cost and i also got a book with parachute games. They are an excellent organisation, good service and very friendly. Just email them to ask for info.
Not yet, but I did notice ELC have them for £15 in their catalogue, which we picked up yesterday. They are in stock on their website too. May order one very soon though, as don't want them to run out or see if I can get one instore.