I hate to say this, but as someone who was also looking for one this week, especially after seeing how the quality is practically identical to hdmi. You're best bet would be EBay. I picked up a cable for 6.96 shipped.
There is also this for approx 7 DIY with your old cable.
[quote name='bmachine']$9.39 plus shipping at Monoprice...this is the one I have.[/QUOTE]
Are you happy with the quality of the signal? Does everything look right?
[quote name='Xo ColdKilla oX']is 15 in the stores 2o?[/quote] Just print it out and take it to your local best buy and do a price match, or just go to toys r us