This is Larry. I am sorry to hear that you were unable to get a clear answer to your question. From your post I am not completely clear what your question is, but I am assuming it is related to the field descriptions inside the file. Here is a list of the fields in the file, and an explanation of each field.
sku
This is our unique product identifier for our products
website selling price free shipping
If you are selling on a website where you are not being charged fees to list, then this is the pricing column you will want to use if you want to offer your customers free shipping as shipping has already been calculated and added to the price
website selling price paid shipping
This column is similar to the one above, the only difference is the shipping costs are not added to the price, so this is the column you will want to use if you want to charge shipping cost separately to your customer
estimated shipping costs
This is the shipping cost for the item. It is no longer an estimate, it is the actual shipping cost you will pay.
free member cost
This is if you didn't have a subscription, this is how much you will pay for an item, We would remove it, but we do not want to change the formatting of the file and break our customers file mapping. Alternatively you can use this if you want to make a little more profit per sale, but your sale price will be higher.
basic member cost
the same as above on this one
pro member cost
As a subscriber to the file, this is your cost and the price you will pay for the product.
free member marketplace pricing free shipping
This file is the price you want to use for your marketplace pricing if you want to make more profit per sale as it adds an addition 12% to the price vs Pro Member pricing, it also adds an additional 18% to the selling price which will generally cover marketplace and payment fees.
basic member marketplace pricing free shipping
This file is the price you want to use for your marketplace pricing if you want to make more profit per sale as it adds an addition 5% to the price vs Pro Member pricing, it also adds an additional 18% to the selling price which will generally cover marketplace and payment fees.
pro member marketplace pricing free shipping
This file is the price you want to use for your marketplace pricing if you want to offer your customers the lowest price, it adds an additional 18% to the price which will generally cover marketplace and payment fees.