If that includes vat and delivery which i doubt ,i would phone williamsons and get a price comparison.
The varistream 2 has come down in price a bit.
I would make sure the pump is the 100psi- 8000-134 model in my opinion is the best. It was the first pump made specifically with wfp in mind instead of a make it fit for the job pump.
Is that sairs site you never know he may match the price from williamsons
Dave