This is a MUST! I believe while you are putting the finishing touches on your products within the RPC you should be able to add the supplier cost! Currently there is no way to BULK EDIT supplier cost on products that are made through the rapid product creator. You must go into each product and add the supplier cost. This is very time consuming and I know I'm not the only one that has asked for this to be added. This would live right in between "SKU" and "Price" on the final page of the RPC. This would cut time IN HALF to build stores. As this is the part that takes the longest when creating a store. Attached a screen shot below so you can see what I'm referring to when it comes to placement of the "supplier cost" between SKU and Pricing.