I am planning to open a small shop in northern Delaware exclusively
selling Kiehl's products.

What I'm interested in is digging up as accurate and as complete as
possible sales data for this brand at local malls (namely, Christiana
and Concord).

A bonus would be information by item (i.e. which items sell better).

To be quite honest, I have no clue as to how tough such information is
to come by. So I will accept corraborated anectotal information.