Skunk,
What exactly are you asking for? Do you want people to respond here directly in your thread or do you want responses to be sent privately?
I'll answer you here. Assuming the $4600 and $3900 are accurate, I would not pay $700 more for the same product unless I could determine that there were other costs (shipping, service, warranty, etc.) that would even things out.
If the pricing gap between buying from JetCat USA vs. buying from Europe/UK, or elsewhere is so large, I can certainly understand and agree with your not buying from JetCat USA. If that changes, would you now buy from the JetCat USA?
Lars