Please find below pricing* for our USA digital map products: DRGs (Digital Raster Graphics — scanned topographic maps with geo-referencing), 3d Vector Contours, DEMs (Digital Elevation Models), LU/LC (Land Use/Land Class, a.k.a. ‘clutter’), Road Vectors, Hydrology and other vector layers, and low-cost off-the-shelf ortho-rectified imagery. Pricing includes your choice of projection (except DOQQ’s) and file format (contact us for options). Please 1 degree x 1 degree block (generally 64 24k map sheets, 2 100k sheets and 1 250k sheet, except for blocks containing water, Canada or Mexico). Minimum order = 3 blocks (NED: Best-available USGS DEMs integrated into a consistent terrain database with enhanced processing: filtering, seaming and edge-matching) All pricing, packaging, and availability are subject to change without notice. © 2004-2016 LAND INFO Worldwide Mapping, LLC Source.