Well, that's a BS reply, cause you aint buyin no brand new Walbro or Zama carb for $10, not even a rebuilt one. I priced a Walbro for an older Stihl FS66 and it was $90 retail. You must be buying stolen ones off of Craigslist or eBay!
The rebuild kit for mine was $8. But my dealer is also a walbro dealer. Through dolmar it would of been like $70, through walbro it would been way less. All marinas have ethanol free gas. Also a service station near me is somehow selling ethanol free gas. Don't know how they are getting away with it.