Wow, great timing!
A buddy of mine just got 10 imports in from Outback last night! The total cost was roughly $20 per snake, so it didn't break the bank.
Pros
small possibility of finding something unusual or new.... very small possibility (for the reasons folks have listed above)
Cons
Possible disease/mites
Babies are pulled from their eggs and put into bags, very unlikely they've had more than 1 meal (maybe)
Now you have bulk Normals to house and feed. No bueno.
All in all I think the whole thing is silly for the average Joe. Unless you're able to pull straight out of the wild, or without tampering there is no point in buying import. You'll end up with a bunch of snakes with maybe Pastel or Mojave, and a lot of possible problems. Might as well save yourself the trouble/money and buy yourself something you actually want.