I was in Mallorca this summer. And I have shopped from Spar across Europe in the past.

The various "Spar" in Mallorca are mom & pop mini markets with 20% higher prices than the Mercadona or Lidl. Walking outside such a "Spar" one you SEE that this is not you "central-europe-1000 sqm shop" but a rip-off with a Spar label on it.

I haven't paid attention on the ATMs though. I believe that with the prevalence of Conotoxia, Revolut, and the likes, and the fact that everywhere* in Mallorca you can pay with your phone/watch, it makes carrying cash unnecessary

*and I mean flea-market that sells crap that only tourists would buy, or bread/cheese/snacks/etc.