Not on Amazon. They do make actual no-sale agreements with manufacturers (looking at you, Warner Media) to not sell used product and boot anyone who tries. Which, ah, is great right until they're a near monopoly.

But this looks more like the reseller is trying to wreak havoc with lawful competition sans an agreement with Amazon. They may not look kindly on it if they see what's happening. Competition where it's not being intentionally stifled is the business model.

Do we all agree, dear reader, there's a distinction between distributor and you selling your used kitchen tools?

If you, dear reader, had a sole distributor agreement with an OEM would you do what you could to protect your reputation and the brand?

Genuine question: what is the distinction between a consumer and a distributor in the context of rights of selling an item that they own?

Which law prohibits the distributor from selling thermometers that they own?

How come an agreement between ETI and Thermoworks have any legal power over anybody else?

An exclusive distributor agreement usually means within a given territory, only a single party may buy product from the manufacturer or buy at below MSRP (depending on the agreement). This is not enforced by law, but by a contractual agreement.

You can always buy the product at retail, from another country, or directly from the manufacturer (if they will sell to you) and sell the product at retail.

It doesn't. If you don't have a contract with pricing stipulations, then you have no obligation to sell at MSRP or MAP.