Opinions on quote, please

[CW1]

Hi, Does this look like a reasonable quote ? Couple of hundred less than British Gas tho' this looks like a better boiler, but quite a bit more than a previous quote from a guy who's now ignoring me. Is it worth the money ? And he is CORGI reg. Well, the company is ! Thanks in advance :o)

To drain down, remove and dispose of old boiler, flue, cylinder and old pipe work no longer needed, drain tanks in loft space and place to one side, brick up old flue hole. Supply and fit Worcester Bosch 25Si condensing combination boiler in kitchen in same place as old boiler fluing through new hole to outside above old flue hole. Connect existing flow and return pipe work to boiler to supply heating system. Run new 15mm hot and cold pipes from behind sink to boiler, run new 22mm gas pipe from ground level under worktop to boiler, run 22mm condensate from boiler to waste used by sink unit, run 15mm discharge pipe through wall terminating 100mm above ground. Supply and fit wireless 24hr digistat DT10RF in place of old room stats fixed to your preferred location. (cont)