Starting this Sunday, July 29, Circuit City will be offering a promotion on all Xbox Live accessories. The promotion: Save $20 with the purchase of any two Xbox Live accessories $19.99 and up. Here's how it works. Over at Circuit City, 1600 Live Points are $19.99. The points cards are considered accessories. So, buy two of them, and, after the $20 discount, the two 1600 points cards will cost you about $20.