Keep the plant in VERY HIGH humidity for a while, with a humidity tent or plastic bag if you have to. I lost plants from them in the past, but the humidity tent works wonders in helping them make the transition.
Hard part about the company in question, is that they do have a nice website, a real decent variety of plants, some at very good prices (on sale), and it makes it difficult to just avoid them.
I am a big proponent of shipping un-potted plants. It makes it so much easier for everyone. And if someone doesn't know how to pot up a Nepenthes, it is good experience! Yea a novice could kill it, but IF the supplier AND the buyer takes a simple bit of care, it is actually better off on all accounts.
Well, enjoy your bugs...er ah, plants!
They will pull thru...just keep them real moist and happy!
And remember people, in this day and age, you never know who has what! So QUARANTINE your new plants!!!