I will say, ordering for the first time is a little difficult. It doesn't seem like shipping fish in a small bag of water, via the mail, is a good idea. Once I ordered some for the first time, I realized it's not that bad at all. You typically get healthier fish, you get what you wanted, and you don't have to drive around looking for them. A lot of times, shipping costs turn people away...but when you buy from someone who charges actual shipping costs, it's not that bad. I'd say $8-12 is about the average of what it costs to ship... since a medium flat rate box is only ~$12. You can fit a lot of fish in a medium FRB. Some places QT new arrivals (like HN1/SM linked above) and most offer refunds/replacements on DOA's, usually minus shipping cost (usually make you take a time stamped photo within an hour or two of delivery). I will say, if you order from aquabid, check their feedback... just like ebay or any other site where you get individuals, there are some who don't hold true to their commitments. Feedback is a great way to see how others experiences went, as well as offering your own.
"What, exactly, is the internet? Basically it is a global network exchanging digitized data in such a way that any computer, anywhere, that is equipped with a device called a 'modem', can make a noise like a duck choking on a kazoo." - Dave Barry