Right now in North Texas it seems that Home Depot is starting to stock fresh boxes of 3 gallons of 10%. It works out to be $2.99 per gallon if you buy 4 or more boxes at a time. The stock seems to be very fresh. Within 1 or 2 weeks old. I bought some a few days ago with "19 121" stamped on the outside of the box. That means that it was bottled in year 2019 on the 121st day (about 10 days ago). I would assume the Beaumont area would be similar. Check Home Depots in your area. It is still cool enough that it should still hold most of its strength even if stored outside in the shade. Later in June or July I would look for an alternate source, though.