Hi there, any chance you could......

[Dustydazzler]

Its suspect.
A builder I knew would get quotes for electrical work from contractors and put his bit on, and if the customer accepted the (revised quote) he would say ok come in and do the work. Sub contracting behaviour.

This is very common. Most Kitchen fitters & Builders all do this. They get your quote, whack on 50% and tell their client the new price. Then get you to do the job