It's really easy. Did you keep the boxes for all that? Estimate the weight, Fedex has a calculator. You can get a pretty close idea of what it will cost to ship. Find a zipcode far away from you (say Portland or LA), and you'll have an idea, rather than "I don't know, I'd rather have local pickup"
If you can provide an estimated weight you will help out a lot of potential buyers right there. Don't make the buyer work too hard.
Local pickup deals hardly ever sell.