Hi Les-
If the breeder supplies you with photos, you like what you see and you are comfortable with the breeder (references might make you more comfortable), then do it. Make sure they email the tracking # to you so you can track the progress and ask for it to be shipped guaranteed by 10:30am. Most services provide this. Less time for the animal to spend in a box.
The majority of my snakes have been shipped to me through overnight shipping companies. I've also picked them out directly while at Bob Clark's, Mike Wilbanks, Tracy Barker's. But after picking them out, they are still shipped to me via either overnight (fedex, ups) or by air (Delta Dash).
When you say the "mail", are you referring to the USPS (post office)? Do not have a snake shipped via the post office! They are completely unreliable and their tracking sucks.
Regarding your post below...Daytona is the annual "world's greatest" herp show. The biggest breeders will be there and will bring their best stuff. It's a place and time for them to show off. So, it would be well worth the trip and the cost of a hotel room.
Good luck!