Of course, what folks are thinking of as 'less severe wobble at lower temperatures' may be nothing more than 'less severe wobble due to lower metabolic rate'--in other words, it's just masking the symptoms. Just a suggestion.

As for selling spider hatchlings--evaluate their wobble. Now you know what a more severe case looks like. Check a lot of vids, and decide what a slight, moderate, or severe wobble looks like. Be forthcoming when you advertise them, and remind people that shipping stress can increase the severity of a wobble in these morphs. Those with a worse wobble may be marked down in price.

You'll sell them just fine, most people realize by now that this trait, while a little disturbing to see, is harmless and part of the morph.