The ad hoc NyloFume bag sales here have been volunteer efforts, covering just the "Cost" of 100 bags, FedEX, USPS, and envelopes, by whomever was willing to make the purchase and organize the distribution, and abetted by a supportive businessman in Texas who isn't making Anything for his time - he's a fumigator doing us a favor.
I have no problem with anyone stepping up and doing another "Round of 100", but by supporting LiteTrail.com you are assuring a constant and readily available supply of good products. The cost is comparable, the "fit" on the OP bags is better, and you won't have to hope that someone waiting in the wings will save your butt.
IMHO, YMMV, HYOH, Do Good, and all of that.
[No vested interest here, but I did have fun shipping out 300 bags.]