Unfortunately, bad distributors are common because they think most Contractors are not as educated as they are, which in some cases may be true. But there are several Distributors that have stepped up and filled this void, Distributors that actually want to work with and respect Pressure Washers and are picking up a lot of business.
I have a local Company I work with, I'm not saying they're the greatest in the world, but when I've had equipment go down they stopped what they were doing to get me running again.....To me that speaks volumes. Because we spend a bunch on chems with them we get a discount on labor.
Good local Distributors are out there, you just have to find them and let them know you want to build a "Business Relationship" with them, by that I mean spending our money with them and referring other Contractors to them.