Amazon has the 2-Pack 0.27oz Scotch 3M Wrinkle-Free Glue Stick (051141928586) for $3.29 - $0.82 off coupon (check “Save an extra” box, eligible on first S&S order for this product) = $3.13 with free shipping on $35+ or with Prime (extra 5% off with 5 items S&S order). Eliminates clumping and wrinkling on most papers.