My parents have enough savings, pensions and no major debt. They are not rich, but they can comfortably afford a decent life.

Still, my father compares vegetable prices between shops and my mother refuses to replace appliances until they completely die. They postponed a trip for the third time because spending on hotels feels wasteful. I understand that this mindset helped them survive difficult years, but now it seems to stop them from enjoying what they worked for.

Has anyone successfully convinced extremely frugal parents to spend on themselves without making them anxious?