Just looked at Starsan. It's 50% phosphoric acid and another 15% some other acid plus a foaming agent. Food grade 85% phosphoric acid is very cheap to buy. Just add an ounce to a gallon and you are good to go. Sanitation problem fixed.
White vinegar is absolutely OK to sanitize the brew equipment. I use it all the time. And I can buy it for less than a dollar a gallon. Just swish and spray every thing and completely drain it. If you really want, swish it again with some distilled water. There is no starsan where I live. Once...