If they are out, or you want to buymore than they have, get a raincheck which they call a Sorry Slip.the raincheck lasts for 90 days and you can use part at a time if they do not have the full amount. My raincheck is for 50 gal.my store only carries 42 a a time. I'm hoping to spread thi price out over the next 90 days by buying 12 or so at a time.