Majorca vs Greece costs when on holiday

[SandalsAndSox]

I’ve got some really cheap flights (£120 each) and mid range accommodation booked in Majorca. We are going during the summer holidays with our 18 yo DC and a friend each. I can see that we will end up paying for the bulk of the food/ meals out. We are happy to treat them but don’t want to pay more than UK food/ eating out prices. I am starting to wonder wonder whether we’d be better forking out an extra £100 ish each for flights to go to Greece (looking at Halkidiki or Corfu) as I’m worried Majorca might be very expensive once over there.

Any advice?
TIA x

Btw we could change the booking without losing money. Oh and the other place I was looking at is the Algarve.

We have always found Greece cheaper than Majorca and mainland Spain the cheapest.