"I'm really disappointed. If the items are packed up ahead of time as if you're mailing them ... " (more), you can take them to the p.o. They'll weigh your pkgs so you'll have an idea on what the postage will be before listing. I pick a far destination/state's zip - for me, that's CA, The USPS website helps, too. They have a lot of info. on weights and you can come up with a zipcode by picking a city. All you need is the weight of your pkg, like what you could get from a kitchen scale. (I've used my little one before-just place your flat cardboard on it if you need to, zero it in, then weigh your item.) It isn't exact, but can give you an approximate. I've sent items that cost more than I expected to ship when the credits received was low. I've also had to send items again that I had already sent, so I know it can cost quite a bit at times. But, then again, if you win something with free shipping, it's the other person paying the shipping cost, so it usually works out. You can give a time frame, too, like in 2 or 3 weeks when you have the money. Then you won't disappoint your friends on Listia."