I signed up with Zip.Ca last July, and was able to rent 36 DVDs within the year. I’ve been on the 1 DVD Unlimited plan for the whole time, and returned DVDs fairly quickly. My total cost (taxes in) was $148.44, with an average DVD rental of $4.12. This is actually more expensive than the 1 DVD plan (2/month), with an average DVD rental of $3.36. I’ve averaged 3 DVDs/month, so it would still work out cheaper if I took the 1 DVD plan, and paid the extra $2.49+tx/DVD.
I didn’t find out about ZipRefill until the end of July, and I’ve now started using it. I’m interested to see how this affects my average rentals this year. I think I would need to average 3.7 DVDs/month or 44 DVDs/year to have this plan make sense.