Grainger is the hardware equivalent of an Office Depot and sells only to businesses. You will have to pass yourself off as a business at least when buying in person. Grainger has stores in Boston, Everett, Framingham, Lawrence, Norwood, Taunton, Watertown, Woburn, Worcester, and Springfield.
Every infinity is composed of only two halves.
That sounds like a very good plan. That would be ideal. The real cheap ones are the ones that have kinda an umbrella shape. Not quite as directional as the MV ones I wouldn't think, but they will direct the light, and are large enough to shield the eyes. Not real sure what all it comes with, the picture is not that clear.