This is just a general argument against constant prices for everything though. Charging $1/lb for bananas is regressive. Charging $3/gallon for gas is regressive. Charging $10 for a t-shirt is regressive. Etc...
Yes we broadly deal with that via lower tax bands for lower earners, but the problem is hard to avoid.
"The law, in its majestic equality, forbids the rich and poor alike to sleep under bridges, to beg in the streets, and to steal bread."
> This is just a general argument against constant prices for everything though.
Maybe EVERYTHING shouldn't BE "constant prices". Maybe where there are practical alternatives to constant pricing, those should be preferred and used.
> Charging $10 for a t-shirt is regressive.
No. Not unless there is only 1 type of t-shirt in the world available. If I'm poor I can go find cheaper t-shirts either less stylish, poorer quality, from a generic brand, from a discount retailer, second-hand (used), packaged in bulk, etc., or maybe wait around for a sale on the t-shirt.
For commodities like that, competition already pushes prices to the zero profit limit. Everyone gets them as cheaply as they can be produced. And for those who can't afford even that we have subsidies.