As a customer, if I were paying a premium price for fresh, farm eggs I would be highly upset if I were sold eggs that had been treated less well than standard commercial farm eggs instead of better.
A person could completely ruin their reputation with just a few dozen inferior-quality eggs sold as if they were the normal top-quality.
Not sure they're treated any less than any other eggs. I don't really sell all that often anyways but I don't see how you're treating them any differently. They didn't fully freeze because if they did they would have cracked.....there's no way to know if they partially froze or not. So unless you're saying people up north who have winter can't sell eggs unless they're gathering every hour or something insane you risk the eggs possibly beginning to freeze.
An egg can freeze completely in about 3 hours or less of being out there depending on the temp that means anyone that has winter needs to gather eggs pretty much the moment they're laid or they don't fall into your "standard". As pretty quickly the eggs would start to cool off and begin the freezing process.
As someone who has ate them I can tell you they don't taste different or have a different texture. Taste like the same farm fresh butt nuggets. Now if they're cracked at all I give them to the dogs as my dogs get a partially raw diet so it fits well in their diet anyways. I'm talking eggs that are not cracked at all.