If you're someone who wants a solid, simple to use espresso grinder, and you're not too fussed about getting super precisely dialled in, then you might be interested in the Sette 30, being slightly lower priced than the 270.
Features and Benefits:
• 30 grind settings
• 40mm conical Etzinger steel burrs
• Hopper capacity 285g
• Three programmable doses
With the previous pricing in the UK, which I assume was to do with these grinder being imported into the UK in smaller quantities before they became part of Sage/Breville, after which I'd assume they're now importing much larger volumes, the Sette 270 is now really well priced, in my opinion.
So I have to say, for the difference in price I think most people would probably be well advised to spend a few more quid on the 270, as the Micro and Macro adjustment is such a great feature.
But, if you're someone who doesn't think you're going to be that fussed about being able to really precisely dial in the grind size, then you may want to save a bit of money by going for the 30, and if you decide you made the wrong choice, it's possible to convert the 30 into the 270 by buying the second adjustment ring as an add on.
As with the 270, the Sette 30 has three timed doses (for grind by weight see the Sette 270 WI) a removable hopper and portafilter cradles that also hold the dosing cup if you prefer to dose that way.
These are not quiet grinders, just keep that in mind, they're similar in volume to a fairly loud food processor, if that helps, and they're among the loudest grinders I've used.