No one is "forced" to buy all of these in the 6 week time-frame they are released. Buy one a month for the next 6 months and you'll be right on what you imagined the release schedule would be. If your local playground doesn't like this schedule, make up your own. Agree on which to buy for which month as a group, then pick those up, rinse and repeat for the next 6 months.
I find the idea laughable that "competitive" players who would travel to as many events as possible are not capable of floating $15 a week for some cards, but are able to travel out of state (or country or whatever) for events.