I have a guy who's a custom box cutter in the city. I drive my cabs down, he puts 'em on a big table, triple cuts the heavy duty cardboard, custom cuts and inserts high density styrofoam, and tapes it up. Best thing ever - and ya - it costs money, but the packaging is rated for 200lbs, the cabs are usually 100lbs give or take. I've sold 3 cabs, and EACH buyer was BLOWN away when they arrived - totally happy with the slight upcharge I negotiated in the price of the sale.