Good to see the low-spend variants on cold-brew: all you need is a nonreactive vessel to immerse ground coffee in water, & a way to strain it out afterward. A reusable coffee filter over a pitcher after leaving grounds & water in a pickle jar is enough, or you can go with a coffee sock or nut milk bag or a metal strainer, but setup should not be costly & is typically reusable (grounds go in the garden.)
However: in general cold-brew does use more coffee beans than equivalent density hot-brewed coffee, often 20-25% more. It is not the most economical choice, though it may bring you the greatest joy, which is valid. The flavors also tend to be flatter, so there's rarely much reason to use high-end coffee for cold-brew: I almost exclusively use the budget beans for this, sometimes even cut with a flavored coffee for variety. If you want to stretch the beans, or really get all the flavors out of a higher-grade coffee, I don't think you can do much better than an Aeropress - they're simple, cheap, hard to mess up, fast to brew, & very easy cleanup, with minimal storage space. The paper filters are $5 for 350 & many-times reusable. It's also pretty versatile in that you can make an espresso-like shot that permits you to imitate cafe drinks, or use more water for a straight americano, & brewed to their instructions it makes a consistent, lovely cup that gets the most flavor from the least coffee mass. So in brief that's your most mustachian choice if you want to drink coffee: a fine result, indeed a luxury, but gotten simply, efficiently & cheaply.