Those things are junk! I bought one a few years ago, it lasted for about 30 gallons of paint and needed to be rebuilt. I had a CH sprayer after that one and used it for about 3 years until I could afford the one I have now. The CH sprayers are around $300 and are miles better than the paint crew units.
IMO the "Wagner One Use Frustration Spitters" have their uses
However, this particular project (as most) is not one of them (worth the time/frustration/investment)
For some projects eg: sacrificing the unit for a difficult to reach area or a "one-off" and time-consuming (by hand) projects (like a hard to clean up epoxy over the metal under-structure on a fair sized deck), it might be worth it to invest in one
But for the most part, Wagner seems most interested in providing "one-off" tools to clueless DIYers
Contractor Talk - Professional Construction and Remodeling Forum
A forum community dedicated to professional construction and remodeling contractors. Come join the discussion about the industry, trades, safety, projects, finishing, tools, machinery, styles, scales, reviews, accessories, classifieds, and more!