First State Vet used to sell it by the quart (and had the best prices).. they only sell it by the gallon now http://www.firststatevetsupply.com/store2/oxine-gallon.html
Revival also has it by the gallon (without the citric acid) .. http://www.revivalanimal.com/Oxine-Fogger-and-Oxine-AH.html
I don't use the citric acid since I'm not fogging with it...
Twin cities poultry supply still sells the quart size.. http://www.twincitypoultrysupplies.com/store/index.php?main_page=product_info&products_id=661
and Foy's Pigeons still sells it by the quart (drop down menu) http://www.foyspigeonsupplies.com/s...-oxine-ah-sanitizer-and-disinfectant-1-gallon
MOST people will be fine with just the quart size.. but if you find you like it and want to use it for everything.. you're better off buying by the gallon...
Thank you fot the links and everything!