Are those Hard drives with roms on Amazon and Aliexpress worth it?

Recently I’ve been itching to play some old games from when I was growing up, and was looking into some ways to emulate them. I recently learned about hard drives you can order with front ends and tons preloaded on them already, and I was wondering if they are with the buy?

Also if I were to purchase it would I need to use it on my gaming pc or would I be able to use it on a mini pc in my living room? I know it’s probably a dumb question but I’m not entirely sure the system requirements for emulation as I am new to the scene lol