Generally, when you are dealing with reputable people who want your future business, you get what you pay for: if that pistol or revolver is priced at $200, you won't get $200 worth of ammo through itbefore you have issues......
Long established domestic gun manufacturers (Smith and Wesson, Colt, Ruger, Springfield Armory, etc ...... ) value their reputation, and so do their best to address and resolve any quality or cusomer service issues quickly ..... companies you've never heard of (and one I can think of that spends more money on advertising than QC!) may have a different business model.......
Were I you, I'd find a local full service gun shop, and get to know the proprieter ...... you may pay a bit more in the short term, but you'll get better customer service than from an anonymous internet gun broker or big box store......