Exclude certain sellers with shopping assistant?

Is there a way I can exclude certain sellers when using the Shopping assistant? There is a particular seller, Commander_Bacon with who I had an awful experience with and do not wish to deal with them. However when using the shopping assistant it lists this particular seller in every available package as they have a large array of cards with low prices (the prices are not accurate they attempt to charge you more than the card is listed for) and its making it essentially impossible to use the shopping assistant. I appreciate any and all helpful replies :)

I just don't want them to show up for me I'm not saying they should be banned and nobody can see them