Your friends at the dinner will be pressurised into buying the merchandise. It could get very awkward and you could well lose friends over this.
This is not about cooking healthy stuff. It's about SELLING the pots and pans.
They want you and your dinner guest to buy the products.
This is what is says on their website "Please invite dependable, responsible qualified guests to attend your dinner party—people who are gainfully employed or who have a retirement income. We strongly encourage you to invite couples (partners or spouses who make purchasing decisions together) "
Your friend wants you to round up 6 friends and then trap them in your house until they feel they have to get their credit cards out.
Just like your friend has trapped you into thinking you need to host this selling of pots in your house.
Politely decline and say you decided this is not for you.