Schooner Varnish is good.
Most manufacturers have relatively the same costs. This really shows up in the chemical industry which includes paint and coatings.If you can buy this part of the story, then logic will dictate that the more expensive product is the better product.So, is a gallon of varnish in HD for $15 as good as a quart of another brand for $25 ? Dont bet on it.I cant remember some of the brand names, and I do not have some of the catalogs handy, but if you go to Ace Hardware, or other hardware stores, Schooner Varnish sells for about $25 and I know its not as much as a quart, but its good stuff. Maybe you could split a can with someone?Another thing that adds to the price of paint and varnish is 'ease of application'. That means less drips and runs, quicker set-up time and higher percentage of solids ( the stuff that actually remains behind after the solvents have evaporated out of it).You get what you pay for.Also.......the woodworking industry is eons behind the automotive industry when it comes to paints and clear coats(polyurethanes). If you have had any experience with 2 component finishes - the part A and part B stuff. Buy it at an automobile supply house. Runs around $60/Qt and well worth the money.