Personally I wouldn't worry about how desirable the babies would be on the first few pairings, if you price them low enough they will sell, and you won't have very many to start. As you progress into more exotic combos they will be more and more desirable. Prices are tough as well, I've seen some hold their value over a couple years, some will drop 50% in less than a year. It comes down to supply and demand and how much people undercut each other. I'm actually working with some pied combos that run about $600 on Morphmarket, but they all sell out as soon as they are posted. I know I can raise the price and sell them, maybe even double the price since the supply is limited and the demand is high. Lots of people are so concerned about cutting the lowest price out there they don't even stop to consider supply and demand logistics and the thought that prices can be increased in some cases, sometimes significantly increased. I actually had to wait a full year to get my pied combo and I jumped on it super fast, and within a week they were all sold out again.