Has anyone had any luck buying maps off Mexico's INEGI website? My Spanish is rather limited and I can't seem to find a page which has topo maps. 'Catalogos de productos' has a bunch of books and references, but no 1:50,000 maps.
I know I can buy them in INEGI offices in Mexico, but I'd prefer to have them available beforehand so I can prepare a route plan of waypoints/compass bearings in case of whiteouts.