Total Item Sold Counting for Authors

I don't when Email notification for an Item sold will be implemented but 1 thing for sure it's easy to implement i.e. Total Item Sold counting only for Authors. Only author can see their Items page .
It's been difficult to count every item sale then add then calculate oh my goodness my total item sold is that.
How it be easy 99 Sale when page refresh 100 sale , Wow i've new sale.
And really it's an easy implementation for codester.
Codester is best no doubt about this but please codester do one step ahead from other marketplace.
Authors and Frederick please look into this matter.