I've contacted them before and they do sell to private citizens, and the guy I talked to didn't seem the least bit deterred that I raised snakes. They sell rodents, I don't think they care what you do with them in the end so long as they get the money for it. And if you want to feed your snake $5 mice, I don't think they'll have a problem with it.
Their prices were the only deterrant for me to order for just myself. But maybe in a large enough order, the price would be more comparable. If enough people chime in for how many they want, I'm sure we could get the bulk pricing and then just split it from there.
I contacted them last fall asking about myco-resistant mice, to see if it was developed and if it was for sale. But sadly, they don't have myco resistant mice.
You may talk to Quigs. I think he purchased his founding stock from Harlan, so he could probably point you in the right direction as to who to talk to, how much shipping was, etc.