Under $500: the corner becomes a coffee bar

This budget buys a machine that stays on the counter for years, or a grinder that outlives the next machine.

Budget rule: a pick stays on this page while the price we recorded for it in the last two days is $500 or less. A pick whose price is above $500 is taken off the page, and so is a pick whose every priced seller showed it out of stock when we recorded it.