Is this real? If so, am I able to just pay the 51 cents?

These are all fake or extremely rare to get, not worth it

You have to get it all the way down to zero to get the items for free. There’s no option to pay the 50 cents. You can do that by inviting a new user to sign up for TikTok. I did it my downloading it to my iPad and making a new account. It takes a few tries and can be a pain in the ass but it does actually work. I got 3 soda stream machines for free and sold them on Facebook marketplace

This scam has been going on for 20+ years now