T&Cs of the job should be the NEC which was agreed earlier this year.
Highlighted earlier on in this thread I think.
if it's going to be this expensive (depending on whether Ez cover anything) I doubt (would think those in Employment already and not in a huge rush to join Ez unless the terms are half decent) would be turning it down.
That looks quite cheap compared to what the SSTR guys paid a few years back before flexi crew was the main stream.