OK, I'll try to make my point - you may know english is not my mother language living in Germany and so some misjudging on my side or errors in the postings I write do occur. And I guess some points I don't fully understand are simply an "american/texas thing".
First of all I won't recommend for or against buying plants from the source you want to buy - I haven't seen those plants in real to judge the prices and quality they offer.
Well I'll try to explain my german/european attitude to dealers: If the quality meets my requirements, business runs smoothly and I have the impression the dealer is not only after my money but does really want me growing those plants well helping me with all the problems I will for sure run into at one point - I'll go for him. Even when prices may be higher at a first sight than from others and plants may be smaller than I want them to be - this dealer will help me to grow them big it is just a matter of time. And patience is one of the most important factors growing plants - a year is not a long time for plant...
So Exotic Gardens created this place starting off a great community for us plants freaks - I would go for their plants trying to pay a little of that back what they did and still do for me (I do really like this place
And for plants they can't supply I would go for this great guy answering all the questions and giving tons of tips here in the forum - this service you can't measure in money... (Even stumbling across the banner on his home page. I guess it must be an american thing. You won't see such things here in germany at all.)
Well that's just my point of view and I don't want to say its the right way to go and won't argue against people having other attitudes or points of view. And hopefully I didn't annoy anyone.
Back to plants: When you do have problems with smaller plants conditions are not suited for them. Bigger ones may survive this due to their size - but the conditions are still not suited for them. From my point of view creating the right environment - or what you believe it is - is the first step to grow Nepenthes successfully. And the way to go is in my mind to set up a terrarium. As windowsill plant only the most hardy ones will survive under typical inhouse conditions...
Good growing!
Joachim