Scott,
I didn't read anywhere that they had to pay to fish the lake. It looks like Angling Lines is selling a carp fishing holiday at Towne Lake but their customers don't actually pay to fish the lake: Accommodation is at the fantastic Wellesley Inn & Suites which overlook some of the most prolific swims on the lake. Upon your arrival you will be met by an ACS representative who will provide you with licenses, up to date information on the areas fishing best and how to approach them, ensure you settle in and be available during the duration of your stay to help wherever they can.