Originally Posted by Stu @ M Developments

£200 difference Seems a lot?

A set of 55lb Siemens are £300 retail here inc vat and import duty.
To be fair though, most tuners will be happy for you to supply your own anyway, i certainly am because they are a common item of failure and can take the engine out if they are imbalanced, which means its totally down to you when it happens.