Lowe’s has Roundup 1.33-Gallon Ready-to-Use Max Control Vegetation Killer Wand kit w/free 1.25 gal Ready-to-Use refill for $33.97 – $10 Online Rebate = $23.97 + free in-store pickup. The free 1.25 gallon refill (normally $25.97 on its own) will be added to your cart automatically when you add the 1.33 gallon wand kit.
There is NO limit on rebates per household, so to make it an even better deal you could order 2 wand kits & get 2 refills for free, and use a $15 off $50 coupon making your total $52.94 – $20 in rebates (2 x $10) = $32.94, or just $16.47/ea! That works out to just $6.38/gal.
If you were to buy concentrate (which I usually do) it’s $38.95 w/S&S @ Amazon for 32oz which makes 5.33 gallons = $7.30/gal. So if you buy two packs it ends up being even cheaper than the concentrate, and you don’t need to mix it yourself and you also get 2 wand sprayers for free.