For whatever it may be worth to anyone, I agree with members who are speaking highly of Colin. A few months ago, I auditioned some $15K speakers from Gestalt, which were excellent, but--in the end--not for me. He did not hesitate for an instant to refund my money in full when I informed him I was going with a different speaker. In fact, he was a perfect gentleman, even though he had invested quite a bit of time conversing with me about how to set-up the speakers I was auditioning to get the most out of them.
With all due respect, it is the dealer who is taking the bigger risk in these auditions. Even with a credit card number as "insurance," a buyer can always fabricate a reason to do a charge back and leave a dealer in an untenable position if gear is damaged, etc. I do not deny there is some mutual risk, but it has also been my experience that most dealers require purchase with an agreed-upon window to return for a full refund. That works for me, as long as the dealer has an established track record and excellent feedback from respected longtime members, as is the case here.
As others have indicated, you can deal with Colin with the utmost confidence.