Matthew if it's your first then you'll be very well looked after . I agree it IS pricey but that's partly what you at paying for . It was what I call a bit of a ' pampered ultra ' - there were portaloos , people at check points for foot care issues & the route was so well marked I defy anyone to get lost on it !
having done other events where there was less in the way of facilities I felt very spoilt!
So all in all I think it's a good first choice so you don't have to worry about nav etc enjoy !