I have started experimenting with this technique:

I come across some familier, tempting food. It’s too hard to resist the temptation, so I buy it at a reasonable cost, then bring it home and keep in freezer or otherwise try and keep it long-term.

• cost .. is a key factor
• shelf-life ..
• transportation effort ..

Q: what if I fail to eat it due to loss, rotting etc?
A: it’s still better than eating it !

— examples:

• nuts
• cakes, pastry — freezer
• ice cream