Found this site (there are others) that gives average costs

It is just a guide but helpfull if yo want to get a rough day costs

As I am staying in some apartments with fridge etc. eggs ,cheese ,bread ,tomatoe and bottled water will be usefull to prepare a breakfast and a picnic lunch

The site in question www.numbeo.com

Some may have it or simalar but I found it usefull as a starter

I've just had a quick look & most of it seems a reasonable guide to what you will spend.
The only comment I would add is that if anyone's itinerary consists mostly of Santorini & Mykonos I would up the maximum range on eating/drinking

Out of 35 days 6 only on Santorini and those were my thoughts too
As you noted it gave average then the lower and higher well I will budget for the higher
Its a guide only
Thanks for running your eye across it

I looked at the prices and they are accurate !!
Prices in markets on Santorini and Mykonos are the highest allover Greece.... I was living and working on Santorini....

Am staying a bit away from Fira at Villa Kasteli in Perrisa

It is a family run place and is just a few steps from bus stop

€22 a night ---may rent quad or small car or maybe one or two
local bus to other village,s

But some day just chillin on my patch

Thanks again for checking those dailies