You have asked simple question, but there is not a simple answer.
If you are a Mckenzie diehard you need to check out the target auctions at the larger shoots.
Another option is to check out ebay and only buy from a dealer in good standing. Note watch the
Shipping price. If you make the Nelsonville shoot, see Mike Engels from Mckenzie.
I talked to Mike at Erie and he seems to be a real down to earth.

If brand is not a problem you need to check out www.randwtargets.com . These are good targets
But they do not look like Mckenzie (they last longer than the newer Mckenzies).
Drop them an email and ask for a club price list. When we were trying to get started
they were the only manufacturers that gave us a break. (We started 3 years ago) .