We have rarely offered print packages of any kind, for just this reason. Everyone is different, and you'll never, ever find a package or pricing structure that keeps everyone happy.
The only kind of packages that we ever offer are session packages (ie. maternity and newborn two session package). However, we have also found that seniors like to buy a lot of wallets. In fact we had one senior girl buy 448 wallets (eight pictures, fifty-six wallets of each).
Our regular price for a sheet of eight wallets is $25. But if they buy seven sheets of the same shot, it's $99. In the case of the girl who bought 448 of them, we charged her a buck a piece.
We also give various discounts "on the fly". If someone only buys $200 in prints, they pay full price. If someone spends $2,000, you'd better believe we'll be throwing in some freebies. ;)
Speaking of freebies, we almost always throw in a complimentary sheet of wallets from just about every session. Reason being, wallets are something that have the chance of being seen by someone and getting you some business. Whereas, the 8x10 hanging on the wall at home doesn't get seen by as many people.