Your going to get those questions.. and its part of being a knowledgeable keeper/breeder. Your going to get the questions like "can they eat potato chips" and "why does he hang on when I pick him up". Your willingness to answer these questions will stick in that persons mind. Your going to have people call you with my snake wont eat, and I've had him for 6 months and now he has an RI what should I do? It's all part and parcel of the whole genie gig.
There is no reason to automatically "up-sell" no..but if you ask my opinion I'm going to tell you a Male bee is a better buy than 1.0 Pastel and 0.1 Spiders. I'm going to tell you just buying a male het is a waste of money..I'm not going to "up-sell" everyone some people come money in hand and know what they want and that's fine..But if I can help stretch your dollar as far as I can I'm going to..