I'm like Apar, I use pricewatch extensively to build my own systems and many for my friends.
But I have never ordered a complete system, I order the specific parts, usually from different distributors since your charged shipping by the part, so its cost effective to go with one of the cheaper priced distributors for each part.
That way if you do get a bum company that tries to screw you, you never have a huge loss, and its easier to prove to the CC company that they didn't send you what you ordered if you keep documentation and you ordered one specific part.
Good Luck Fester, I hope you get things worked out. I would suggest calling your CC company if they start trying to charge you a restocking fee in this situation.