What you do with your own money is entirely up to you of course, but if someone decides that £300 (or more) is worth paying for a say, no matter how small, in the running of their club then that's their choice.
Also, knowing that your money is being put away to help maintain the financial stability of the club is more than just a "feel good" trip in my book.
I like the look of the idea, and look forward to hearing the final details as they become available.