They're not even close to rhizos and are sure not worth rhizo money imo. To give you an idea they're paying about $30 for them from suppliers and a lot of stores have these or have access to them right now, anything over $80 is shamelessly unethical, but again that's just my opinion. If you feel comfortable paying 1,000% markup to a place that purposely mislabeled Monomyces to get more money out of you then it's worth what you're willing to pay for it.
You can also try going to a good (ethical) LFS in your area and have them ask their suppliers about "Balanyphyllia," it's what they're being sold as from the wholesalers who have them at the moment. Or you can have them email those pics to their suppliers so they can check.