No problem. If the products_price_w field is in fact in the products table (appears like it should be based on the name), then with EP4 installed, goto configuration->Easy Populate then locate the the listing for User identified fields. In the right side of the screen, add products_price_w and update the field.

Now where products are exported (mainly the full export) the field will appear, and will also be "read" for import.

The caveat to this method is that anyone having admin access to those settings could modify the list of additional fields to import/export to/from the products table.