For our regular suppliers, our price lists are updated yearly, or twice yearly in some cases. Having to update the buying and selling tab seperately is taking way too long - buying price should be pushing through to selling tab, and then standard pricing generated from pre-set mark up + new price.

Or at least, have a setting that can turn this function on and off, so for certain businesses they may not require this, but for us it is a necessary feature to efficiently update all our product lists.