Not really sure. MY OPINION: its in support of the parent organizations. The main ways the ABA and APA generate funds is though Standard sales and membership dues. If every breed club published breed standards....there would be no need for anyone to buy. Again, MY OPINION.....serious breeders should own the Standard. Look how much quality birds cost, feed, housing etc. The hard back version of the SOP is around 50-60 dollars I believe. I have it and the "pocket" version of the "Bantam Standard". It fits in my show box. When questions arise at shows I have it for quick reference. WELL WORTH THE MONEY!
Tim
The other thing about a Standard is the breed description is nice, but so much of the best info is in that first 40 or so pages of the APA book anyway. The description alone is the icing on the cake, not the main dish.