Its not just hotels that rip us off, just been into Barton and as a helicopter under 1200Kg it is £19.52 inc vat, my weight fixed wing is £12.99, a Jet ranger is looking at £31.77 against the same weight plank of £21.38.
The really annoying thing is we don't even use their short bumpy waterlogged muddy bit of grass either!
I agree. Never understood why many airfields charge helicopters more than fixed-wings of the same weight.
Not even sure weight should come into it at all for helicopters.
But let's keep this as our hotel landing fees thread.
You could always start a rip-off airfields thread. 
Heliport