It is, perhaps, a sub-genre of the free sign; or maybe just a related genre but however it fits in, free stuff sales copy is always nice to find. They're the few words that step up when "free" just isn't enough.
If you see a sign that reads "free", don't steal the sign, 'cause it's not the sign that's free, it's the stuff around the sign. Instead, take a photo of the sign and send it to me and I'll post it here. Thanks! email: NormMagnusson@aol.com