No problem
Ok, the thing with mail is trust. Some people are just as bad as they come, they will send you half dead Slings or their packaging is real bad or you never get a package at all.
Here are some guide lines that should help a little:
1< Ship overnight and track the package on a regular basis through out the day.
2< Arrange shipping so that you will be home on the day of arrival to accept the package.
3< To be on the save side, the sender should always demand a signature at delivery.
4< Google people or find any other source of references (ATS has an option for responses and some other boards will to, people post most of the time in more places). Message boards and Forums are to your advantage, read a little bit about the people you want to buy from.
5< Always use a credit card for payment, no cash, check or money order. With a credit card it is easier to dispute a claim (for instance there was just a sock or a stone in the package).
My first bigger patch of spiders was via mail and I had no probs, got them from patrick (ATS). One way or the other you will have to deal with mail, since in most cases you will not always find the species you want locally.
Sometimes you can find some tarantulas on craigslist to.