If you do need to ship it, please consider the following. I purchased a used printer, and UPS completely destroyed it. No news yet as to whether UPS will cover the damage. Word from Solidoodle is that UPS rarely pays up, so pack it well.
The failure mode was that when the printer was dropped, the weight of the bed pulled the two vertical Z rods out of the sheet metal at the top, causing them to fall forward and strike the extruder, breaking both of the side mounts, and snapping off the threaded Z rod near the base. The bed was most of the way up, so there was a lot of weight cantilevered out held up by the Z rods. You need to try to reduce the load on the Z rods and get the extruder out of the way. To that end,
1) place the bed at the bottom, so that there is as little weight hanging off of the vertical bars as possible. You probably can do this by hand if necessary, rotating the threaded rod. Make sure there is enough packing material under the bed so that it cannot move down if the printer is dropped. It is the weight of the bed that pulls the Z rods out of the sheet metal.
2) place the extruder as far towards the front as you can, so that the Z rods cannot hit the extruder if they do come loose
3) pack the inside so that the Z rods cannot move towards the front of the printer. If possible, place a piece of stiff foam or cardboard along the top to keep the Z rods in place. The foam/cardboard should go from the front of the printer all the way back to the Z rods, as one stiff piece. Keep the foam/cardboard in place by filling the cavity below it with packing material.
Perhaps others on this forum will have additional recommendations.