You know, there's something to be respected in crass consumerism sometimes, IMHO.
Every other business in the world just expects people to accept that businesses make more money when the Christmas decorations are up. I'm guessing that Wegmans has decided that doing that is a little bit tacky.
So they put up the attached cheesy sign to:
A. Make their customers feel bad for not giving them more money faster by starting their Christmas shopping in early October.
B. Make their customers feel bad for thinking Christmas decorations in October is stupid.