Prices may vary considerably on these types of products. It just depends on where you're located, the volume you're buying and the seller's level in the distribution chain.
GLYPHOSATE 41 (41% a.i.) in 1-gal jugs (includes a surfactant) may run around $75 per gal. - and will make about 100 gal. of spray-mix.
RODEO/AQUAMASTER/GLYPRO (53.8%) in 2.5-gal. jugs (no surfactant in these products) may run about the same, or less, price-per-gal. But, 1) these formulations contain 25% more "active" than the GLYPHOSATE 41 - 2) but, they require the additional purchase of an aquatic surfactant ($18-$22/gal.).
As for the smally: I was catching my fish on watermellon tubes or gray 5" Senko worms. Had a blast on the Susky River back in May, but actually caught more and bigger smallies on Champlain last year with Senko worms. If LMB fought as hard as smallies (lb:lb), we'd have to fish our TX lakes with offshore tackle.
