the "partner fee" on paypal in sales tax. bricklink gets none of that
money. they only get the fees that sellers pay once a month.
you can apply orders to your wanted lists by going here
https://www.bricklink.com/orderSettingsCols.asp?v=p&viewFrom=O
and selecting "Items in Order on My Wanted List Icon" and then clicking
the scroll next to the order and then following the information on that page