Where to buy (B&M store) iPhone headphone adapter?

[mjfor40]

I like this iFrogz headphone adapter for the iPhone but need one for an upcoming trip in a few days.

Where can I buy these in a B&M store? Does the Apple store or somewhere like Best Buy sell these?

[aristobrat]

I don't remember seeing the brand "iFrogz" at my local Apple Store, but they had a product that looks like this iFrogz one:

http://ifrogz.com/products/fitz/