ACE Hardware has lots of items on sale for FREE after Mail-in Rebate. I have never done a rebate for ACE, so I am not sure just how easy or difficult it might be. Worth a try!
This Organic Auto Glass Cleaner is $1.99 with $1.99 MIR
Other items listed in my local add are:
Soy Based Lubricants (4 varieties) $3.99 with $3.99 MIR
Totally Green All Purpose Cleaner $1.99 with $1.99 MIR
TurtleWax Car wash concentrate $3.49 with $3.49 MIR
Jobe's Fertilizer Spies $1.19 with $1.19 MIR
I love that a lot of these are natural products! Check your local Ace store, as their sales do vary by region.