If you really can get true DUCO from the Family Dollar Store @ $1 - buy all you can. Hardware stores retail for $2.50 to $2.75 - those that have it.
DEVCON apparently told WAL MART they had to raise their prices so the fine folks at Wally World dropped them and went to a Chinese import that is now $1 for a 1/2 oz tube. The Old DUCO price was $.97 for a full oz.
I bought 1 tube just to try it - NOT THE SAME QUALITY!
I have since found a wholesale house in Chicago and I get it by the case of 48 tubes. Since I average about 8 dozen wood arrows per week I use a lot of DUCO. You just don't need Fletch Tite for wood - the expense is not necessary.
I could sell it to you for $2.25 per tube, but then with shipping, you may be just as well off to find it locally. Of course there is no sales tax in Montana!