The Magazine subscriptions and Online Price Guide subscriptions
are entirely different subscriptions.
The OPGs add an amazing search ability
to the magazine that is not possible with the magazine;
the Checklists make keeping track of certain sets and player's cards much
easier for collectors. In other words, these services are "add-ons" to
what the magazine already gives, a "workbook" for the magazines. Make sure
that you are completely informed about the OPGs before you subscribe
(please read the OPG FAQ page), and make sure that you are in the correct
area to purchase either of these subscriptions (Links are provided below).