TBF, it’s the sort of drivetrain that’s standard on something like a Whyte G160RS (only know this as the only person I personally know running Eagle had a ‘new bike day’ a few months ago and is over the moon with 1×12 after finally going 2×10 18odd months ago, having stayed 2×9 until then)
Yes, a full Eagle drivetrain is enough money that there’s a whole, capable MTB available for the same price, but that’s a bit like complaining that a sensible family car doesn’t come with all the spec of a model costing three times the price.
It’s always this way – full SRAM 11 speed drive trains were this sort of price at launch. First they launch, then split down to the XC-aimed ‘XX’ and trail/enduro ‘XO’ plus an OEM level, and then launch the cheaper versions once it’s been out a couple of years. Shimano are similar with their trickledown.
On current CRC groups builders, a 1×11 SRAM GX full non-brake group including the pricier x1400 crank is £360, with the cheaper crank it could be £300 – and it’s a good option for anyone wanting SRAM 1×11 on a budget. It’s not a heavy, poor performer – it’x XT weights or under and the cassette is all steel so should wear better than most 1×11 cassettes. A full, mechanical XTR M9000 non-brake group is £700, and whether it’s as good as Eagle is subjective. Enduro-MTB have a pretty good and balanced article on why you might/might not want Eagle that comes up easily on google.
Eagle isn’t really overpriced compared to the alternatives, it’s just a premium product that is a great thing to have for people that have the cash to spend on their bike and want it…