1% is just as good as 6% I use 1% and it gets quiet a lot of sales from it. Why pay more fees when your item sells just as well at 1%? Listing at 6% is no real advantage. I can see some sellers listing at 50% when they want to compete to be at the top of the search results or just to make a sale. Overall think of your profits it all comes out when your item sells at the end. Stick to 1%.