What are some ways to workout how much to charge people?
How many packages are usually optimal?
Should you show prices upfront for all packages or have people fill out a short form to call /email them back with pricing? Would this help with capturing a lead and working to sell them on a one-on-one basis?
Read the epic Camels and Rubber Duckies post by Joel Spolsky and you'll understand the real complexity with pricing.
How many packages? Three. More than three usually ends up in a "paradox of choice" situation. Three is always the right number, except when it isn't.
Should you show your pricing? Yes. No. Maybe. Check what your competition are doing and figure out why they are doing it. Then either copy them, or be radical and do the opposite.
Easy to state, not easy to accomplish. The links in the answer are still relevant. Take a close look at anchoring effects.