You can purchase a 40' conex for $2k-3k around here. Delivery is a bit pricey depending on method, drag off a tow truck or trailer or bring in a crane, between $100-$1000 all things considered. Condensation is a BIG deal around here, make sure the vents are unobstructed. A conex is a fine idea for temporary, secure storage of tools. Can even make a decent work space, restricted to a 8' width. My locality will not allow me to have a conex on my property for more than a couple weeks to support a move. No long term storage of a conex at all, better call the city before you attempt.