Claire made the suggestion I would have made, which is to contact LE and see if they'll honor the sale price. Or just wait a week or two and they'll have another sale.
Woven traditional shirts seem to really require trying on in a way that other items don't as much. There's so much to get right (or wrong!) - sleeve length, bust fit, scale of collar, button placement, pockets, overall length, drapiness of fabric...
I actually exaggerated, I only have three denim/chambray shirts. ;/ One is the lightest in both color and weight, with princess seams and contrast stitching, from a no name brand I got at TJ Maxx or Marshalls. The second is a little darker with snaps and flap pockets, originally from Gap but gotten secondhand from Twice. The third is also from Twice, a indigo blue in that weird super stretchy knit denim that Coldwater Creek used to make knit jeans out of, and a heavier weight.