Am I being overcharged? Boiler advice!

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Boiler springs a leak (a glow worm if you're interested) , chap comes along tells me to get a new one and charges me £78. I already think that's a bit steep but fine.

He wants to install an Ideal Logic Max 24 at a cost of £2160. I've taken a trial offer of Which to look up. They're ok not best buy or anything.

After a google I see an advert offering a Viessmann Vitodens 100-W Combi for £1794 inc vat.

or a Worcester Bosch Greenstar i 25kW for £1894.

I feel like I've heard of these brands as well, but torn because local chap might be better somehow Money is really tight too as haven't worked since mid March, so I don't want to feel like I'm being over charged. Any advice?

Nothing to do with gas and everything to do with the electrical safety of their boilers, they recommend a Type B RCD when questioned they cannot provide an answer to why. It either needs a Type B due to a risk of DC leakage back into the installation or it doesn't there isn't a middle ground. DC leakage can blind RCDs of the incorrect type making them operate slower or not at all, you as an installer have to ensure that what you fit is not compromising the electrical safety of the installation with the equipment you install(most boilers now specify Type A). Most properties have Type AC only which offer no protection from DC Leakage. Type A is slowly becoming the standard which offers some protection and are readily available. Type B offers protection for higher amounts of DC but are extremely expensive and in alot of cases not available. There is no gas safety reason why Viessmann couldn't answer why they have recommended a Type B, but i sure as hell wouldn't want to be signing off an install omitting that when the consequences are a failure of protective devices.

I've got a Worcester Greenstar which came with the house. It works fine enough.

When it dies I'm going for a Veissmann.

I have nothing to add about boilers, but as the wife of an automotive engineers I am laughing at the car analogies Bentley and VW same cassis with blinged up bits on the Bentley - you pay more for bling not better engineering. I suspect he meant to compare Ferrari and VW.

I love Worcester boilers, and had a 10 year old one in the first house we bought that was still going 14 years later when we sold the house.
In my experience heating engineers will like one brand over another, but a different engineer will tell you the opposite.
I would pick one with a 7yr plus warranty.
My Sil had to replace her boiler not long after the 2 year warranty expired! Gutting.

Brand new Worcester boiler last week outside London from my very trusted plumber whom I've known for over a decade. Total cost £2050. Quoted slightly cheaper for an ideal at about £1800 or so.