I bought this tamagotchi rip off on ebay for 1.50$ which claims to have 168 pets. I haven't actually counted all of them but I can confirm it probably does have 168 "pets".
These pets are just a sprite that will appear on your main menu but no matter whichever you choose when you click an action it will always show a lil ball doing it. An issue i had was that i didn't knew what the buttons did and i always end up restarting the machine. Another major issue is that you can't turn off the sounds. Besides those 2 things i actually liked it for just being 1.50$
I do enjoy these little cheap machines even with their flaws. I find it interesting how they can be that cheap.
If you are like me then I'm sure you'll enjoy having one of these little guys around.