Making your own ball is a bit fiddly but worth the effort in terms of cost. Get Hunter involved. The one I made at home weighs 11kg, retail that would be around £70, it cost me about £10 in materials.
You slam the ball and it pretty much sticks to the floor so you have to squat down to pick it up. The 9kg ball we use at the rowing club bounces back to chest height, hard work but still less work. We destroyed the old 5k ball within 3 months of me introducing more punishing exercises.
Dynamax type balls are far more forgiving on the fingers in catching and throwing drills.
The rationale for reduced gin intake and the knowledge of the perils of alcoholism and attendant metabolic derangement has almost entirely come from physicians and researchers.