Hi, I found out why its hard to find the refills!!!!
Apparently, the refill box is easy to break into as opposed to the starter box with the hard plastic shield. So, stores have been keeping the refill boxes (just ordinary boxes) in the back, so you would have to ask for them.
I just came from Harmons Beauty store and saw only the starter kit, I asked one of the clerks why they only had the starter kit, and the manager informed me that most stores are keeping them behind the counter because they are constantly being stolen.
So just ask one of the store clerks to get the refill box for you. Also, Drugstore.com is really good option also.
Smiles...