They're only 75 quid cheaper. Not a vast saving.
It is a vast saving when it allow them to put better components on, like the HY/RD-C brakes.
Great thing about the new Tiagra derailleur; it can go up to 34t, so a 1-1 ratio is doable with a compact.
@edscoble started
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They're only 75 quid cheaper. Not a vast saving.