Hi Spud,
I think this is the only site that sells them at this price. Most other places they are over 200 quid. I know I placed my order with projump last week on the phone and they arrived the next day. There is a shop in my city that sells a different brand (exactly the same) for £239 so its a big difference.
The initial learning curve on projumps is quite a quick one. I was quite shocked how off-balance I was when I first put them on and wondered if it was going to take me ages to get used to them. The best analogy I can think of is a new born deer like bambi lol. When they are first born they are very unstable on their legs but are soon running around fine.
Within 2 days I was running on mine, just dont be in a hurry to learn and make sure you have a nice wall to hold your hand for a little while
Matt