Aw, I suppose I'll have to start doing that call back thing eventually, lol. I'm just afraid they're going to say 'well, I had this question, the other day he stuck his nose in the corner, and was pushing on it, and I wonder if he was trying to exercise his neck, is there anything I should do to give him a workout?"
...and so on.

Personally, I see no reason to 'upsell' a person automatically. If they're happy with their purchase, they'll remember you, and get more later. That's the most important part.

BPs are like Lays potato chips, you can't have just one. I know of few people who buy a morph, and then never buy more snakes.