After playing the game for a while and building up your stores save the game. Now quit the game and go into your current save game directory and make a copy of the base.dat file. Now boot the game back up and sell everything you have (if you need money) or transfer stores (not ships or personel) to other bases. Now save the game again and quit. Next replace the base.dat file with a the copy of the original that you made earlier. Now when you go back to the game you'll have all the money from the sales plus all the equipment you sold. And, if you transferred anything those items will arrive shortly. Continue the above procedure as often as you like.