just keep in mind you will have similar shipping issues with leadwake. we ordered 500lbs back in late summer. it showed ready for pickup for almost 3 weeks before they finally started moving with usps.
no proof but I suspect usps doesn't really want to pick the stuff up from them based on weight. they ship in a priority mail 1 price box and 50lbs for $15 in shipping is a good deal. I would guess he's only allowed to ship "x" number of boxes per day. I bitched a little after 3 weeks and mine moved the next day.