I'm a subscriber to LVA, and have been for years. However, I've used very few of their coupons. They just aren't where/what I want to be doing. If they fit your interests, then they pay for the subscription. But I haven't felt the urge to chase coupons just because they are freebies.
I actually use very few of the coupons in the Pocketbook of values, but even if you only use the gambling coupons and one or two dining coupons, you will probably have an expected value close to the $50 subscription price.