Try before you buy?

@meadowman - Right now there isn't a sales path built-in to the app, though there is a plan to have one. My idea is to have authorized dealer accounts so dealers have a new sales channel. As for if you get to buy the borrowed pair of cables, that's up to the manufacturer and dealer. In the case of Cardas, for example, they have laser engraved all of the cables in my library as loaners. So, if you wanted to buy the cables, they'd ship you a new pair.
There's certainly a lot of room for abuse, which is why the trust system that has been built is so vital. Here's how it works:
Each time you participate in a transaction either as a borrower or a lender (users can be both), the other party reviews their transaction with you. These reviews are analyzed by the system, and you're assigned a trust score from 0 to 100. Everyone starts at zero. The higher your score, the more trustworthy you're deemed to be. If you have a low score, other users won't lend to or borrow from you, so you have an incentive not to game the system. Obviously, it's more complex than that. But in a nutshell, that's how it works.
@sts - That's a reality I lived when I worked for MIT all those years. It's just something we had to deal with. Many customers are not that way, though.

I think it sounds intriguing.I'll wait for your Android app and check it out more thoroughly.

I hope to get that out soon, @jtcf. I'll do my best.

I use the Cable Company for this very reason, to ensure that I make informed decisions when it comes to the sound I'm looking for. To ratchet it up a notch, they also like to know what equipment you have in order to recommend proper interconnects, etc.to get the sound you're looking for. My distinct advantage with them is that I'm within driving distance so shipping costs are not something I have to think about. IMHO, since they offer these services, I'd rather spend my money with them. Maybe I could go used but why, the internet selling place is a weird place & your chances are 50/50 on anything but new. Just to prove my point, the same cables I priced on Audiogon, the person selling a used pair was asking full retail price & I got a new pair (burnt in also) for 30% less. Now does one get lucky all the time like that? No, just one mans story. When my priorities change back to audio, then I'll go to them again because of the conveniences listed above. If I might give you any advice is that you should also read some of the forums on here & think about carrying some of the "other" cables some are talking about to offer some different alternatives. I wrote a review on some cables that I wasn't particularly impressed with but for the new audiophile, I recommended they hear them so they realize what a difference good cabling makes.