Hi,
These deals aren't always terrible but they generally have a catch or condition in there somewhere.
Ask if both have a bad wobble.
Ask yourself if you are confident in getting a new hatchling settled and eating.
Check the forums for feedback on the seller and always remember to check for threads the seller has been in that set of warning bells.
That last tip has saved me buying snakes from people with current mite infestations, mystery illnesses and, in one case, IBD.
dr del