200 items times 5 cents for a premier store equals 10$ per month compared to 100 dollars for listing without a store.
10$ plus 50 for the store equals 60 so you save 40$
But whats funny is that if you listed before the new store policy it would have only cost you 70$ and with the new FVFs its a wash or if you sell more you end up paying more.
Plus if nothing is selling in the past you would have listed less and paid less but now with a store they have a monthly fee and if you decide to sell less and drop the store you may still pay the same. So basically its a back door side gate way to get all sellers to pay a monthly fee of 50$
Which is part of the reason their stock went up.
Anyway that's my rant.