I've been open 2 and a half months...
In that total timeframe, I receive an average of
39 Views per day
Less than 1 Shop Favorite per day
3 Listing Favorites per day
and an average of .60 of a sale per day (about 20 sales per month)
It doesn't sound like much, because the views/faves are pretty low, but 70 sales before reaching 3 months seems good to me!
But this is my supplies shop... My jewelry shop is the opposite: a ton of views and faves a day, but little sales.