I buy a lot of healthy food, porridge oats, vegetables, how do the shops secretly up the prices of goods sold by weight?
For packaged goods, by reducing the pack size, say from 1 lb (454 g) to 12 ozs (340 g), but keeping the price the same.
Be difficult with loose goods, obviously.
Not noticed any changes in gas prices, I always fill up my tank for $ 50 exactly.
If by 'gas' you are referring to gasolene (or petrol as it is more commonly known here in the UK), prices have been edging up by about £0.01 (a penny) per litre
per week of recent.
Not really an example of 'shrinkflation', more of inflation generally, which as regards petrol has been caused by a number of factors including higher crude oil prices, higher demand generally (at the height of the first COVID-19 lockdown, not so many folk were driving anywhere, so reduced demand for the stuff) , USD-GBP currency movements, and quite possibly opportunistic price increases passed on by fuel retailers.
So, if you put £50 of petrol in your road vehicle of choice here in the UK, it might well no longer fill the fuel tank!