it's generic roundup at a way way premium price.

i pay $53 for 2.5 gallons of 41% glyphosate. you can pay $20 for a quart of the stuff from Ace. if you bought 10 quarts of it, that would be $200 (and it's still 25%). if you bought the same amount of active ingredient, i think you'd have to buy around 16 quarts of the ace stuff. that would be $320 for what i pay $53 for.

go to a co-op or a grain dealer, buy a 2.5 gallon jug of it. it won't go bad or expire, just don't let it freeze. i go through 2.5 gallons every 24 months.