Yes on the import, someone has to import it and take care of the cites paperwork. If they do, it can be very reasonable ($40 for quartered 8x8x3).Is that shrinkage after drying or in the drying process? I had thought it quite stable and have used it in knife handles a bit. Cocobolo is generally unobtainable here although it is fantastic stuff. I got a bit for knife scales from the US some years ago. I'll see if I can get Rosewood. Again, fairly difficult to find here. The last lot for a guitar was from Oz but there has been difficulty importing due to the protected nature of many of these woods.
Bubinga and purpleheart will continue to expand and contract for a while. If you make a plane in the dry season, the pins and tails may telegraph their lines due to wood expansion. Btdt. Less movement means less telegraphing, but everything moves a little unless you can find really old wood.