harvester capacity

Increasing harvester capacity from $700 to $1000.
Since I assume harvesters will be making lots of long trips to distant spice fields far from rocky areas, so a higher capacity seems an appropriate thing.
It also is in flavor I think, where in Dune, harvesters were extremely valuable because they were loaded up with large amounts of spice. 
It seems like it would be also fitting with this flavor if harvesters dropped their valuable spice on the ground when they were destroyed.