This was similar to something Loblaw offered in the late 50s/early 60s, along with trading stamps.
What was Nu-Way? I remember a store by that name but never knew it as related to Acme.
Nu-Way was a chain in upstate New York that Acme bought back in the 60's. I believe they kept the Nu-Way name going for a while but eventually converted the stores to the Acme banner.