Despite rumors and speculation focused on a NAND flash-based iPod video, Apple may have to hold off on introducing such a device due to recent price trends. DigiTimes reports that Taiwan-based memory module producers claim Apple has placed monthly orders for around 20 million 1 Gbit units, which the companies are attributing to a flash-based, video-capable iPod. Based on recent pricing trends, however, at least one flash-related sales manager at a…