Can you create a load file for a sub-grid?

Hey All,

My company went through a vender to get CRM 2013 started.  They placed the product information in the program and then created a pricing guide in a sub-grid.  We have 11 types of pricing methods based on type of customers; therefore, if we have a 100 new products then we have to fill in 1100 different prices to place in our pricing sub grid.  Is there anyway of creating a load file to be able to place those prices in the grid?  Also to add in the sub grid is a lookup function for the type of customer.  We would click the add and click on dealer for instance to populate.  Is there a better way of doing this or am I just stuck adding these monetary figures manually?  Thank you