I must say, the whole idea of bot shells is ingenious. It's like taking a game that's already great and adding to it the whole "Gotta Catch 'Em All" aspect. Trying to get all the possible shells and to produce all the sex bots with them and putting them to work is extremely satisfying. It's a completely separate game in itself.
I'm trying really hard and my best bot is valued at 34,143,286 Cr atm. :) It's a Type V Shell bot , btw.