Now I know this will only interest the Canadians out there (sorry), but thought it may be helpful?
I get my flyer's delivered on a Friday, if I am lucky!!! I only get a select amount though, as the city we live in is growing that fast that there are not enough flyer's to go around, I got that info right from the horses mouth as they say, the local paper who includes the flyer's in their paper.
One thing I do is check out this site to see what is on sale, or I do get the flyer's delivered to me via email, I signed up at the grocery store sites online.
If you have any deals you want to let everyone know about please let me know and I'll include them.