Ok so my Coturnix Quail are laying great and some of my friends wanted me to ship them some eggs but I'm a little confused with how shipping prices work. For example: I bought eggs from quaillady in fall and shipping was a little under $7 for a mix of 12+ coturnix and button eggs, and I live in WI and she's in FL. Well then I wanted to buy 6+ button eggs from a lady on Ebay and they told me it would be $17 for shipping and we are both from WI. So I don't understand this at all. I want to begin shipping eggs at the lowest cost possible, how do I do this? Also how do people know the shipping costs with just a zip code? Thanks for your help!