No, you can't. They will only give you a puzzled look and try to sell you batteries or a new phone. There are a few online vendors of JP1 cables, but the one I linked is the best. You can even make your own if you are so inclined. It's also important that you buy a JP1.3 cable for the 15-133, not JP1.

JP1 is a remote hack. There are no commercial products to support it. A few individuals make and sell the cables and/or kits. Some users make their own cables. You'll never find them at any brick and mortar store or even amazon for that matter. They are so expensive because each cable is hand made. But they're well worth it since the software is free and you can use them on any JP1 remote and essentially turn a $10 remote into a $150 remote.