I can then recommend specific to look for on the used market.
Affordable and compact. Ideal for espresso drinkers, but requires a wait time to steam milk.
Are you comfortable doing yourself, or do you want something "plug and play"?
Grinds and brews at the touch of a button. These have more plastic parts and are riskier to buy used due to internal complexity. 2. Physical Condition and Maintenance
Stick to reputable Italian or European brands (e.g., Gaggia, Nuova Simonelli, Breville/Sage).