At that price range, you will be far better off buying them with an understanding you can return them if you don't like them. Shoveling out $4 digits of money for any cable deserves a return policy.
Look at this way, you can toss $4,000 worth in $5 dollar bills out the window as you buzz down the freeway and chuckle darkly as you watch the cars pile up trying to catch the money. Or, you can buy $4,000 worth of brand x cables with no return policy.
I've been down this path before, big dollar speaker wire that wasn't better than my mid-price speaker wire. That expensive stuff is still in my speaker cable box, not being used.

