I don't know about the USA, but here in Russia the 70% solution of acetic acid (not the glacial one, but wouldn't this one suffice?) sells under a name of "vinegar essence" in food stores. It's widely used in canning, because the regular table vinegar would be far too dilute to be practical. Isn't the case not the same in the US?
Cheers from Moscow,
Usually, the hazarous material shipping charge is applied to each order, not each chemical. So you can save by putting several hazarous chemicals in a single order. It's still expensive. Most major metropolitan areas have at least one laboratory chemical supply house. You can often deal with them. They may not carry purely photograhic chemicals (e.g. glycin, CD-4) but the common laboratory chemicals (e.g.acetic acid, ammonium hydroxide, sodium hydroxide, sodium carbonate, etc.) and those commonly used in laboratories and schools (e.g. thymol, hydrogen peroxide, many fine chemical reagents) will be available at reasonable prices.