I am trying to use a data plan file to insert the following objects:

* ProductBook2

* Product2

* PricebookEntry

I've created some data and I'm ready to insert, however, I'm getting errors relating to 

STANDARD_PRICE_NOT_DEFINED  No standard price defined for this product

This makes sense I didn't insert it into the standard pricebook, but then I was thinking... well how can I do that with the DX data import?

Thanks in advance!