Frankly, I was looking for something a little more high end than Pantene or Neutrogena. I tend to use brands like L'occitane, Kiehls, Le Labo or Baxter at home. I was more interested in a place to buy something like this wholesale.
I just know myself and refilling isn't an option. I'm neither organized or timely enough to do it regularly. The ROI isn't there for me, and when it comes to shampoo I'd prefer to spend money than time. I'd rather just have something I can grab and toss, maybe always having an extra or two in my bag (hence the need for small).
I'll check out the sheet based stuff. If it is nice enough it sounds like a good disposable option.