The research firm said the market for flash cards is set to reach $2.75 billion in 2003, a 38 percent increase on the $1.99 billion in sales racked up last year. Gartner expects the Secure Digital format, backed by Qualcomm and SanDisk, and Sony’s Memory Stick format to dominate in flash cards, predicting that they will account for a combined revenue share of 65 percent by 2007.