The breeder or shipper is not responsible for the legality of the animal wherever he/she ships to. That's the buyer's responsibility, so it shouldn't matter who you buy from.
From what I'm reading, it sounds like as long as you personally don't own more than 25 animals on that list (sounds like total though... like you could have 12 radix and 12 sirtalis, but not 25 radix and 25 sirtalis) it doesn't matter how they are obtained.