Good affordable mesh hardware is not hard to find, but it’s even easier to find BAD affordable mesh hardware.
Do yourself a favor and instead of buying a bad thing two or three times (or worse, having to climb to your roof OR WORSE to replace bad hardware)… buy your hardware from a reputable source the first time.
You may notice the lack of Amazon, AliExpress, and eBay from this list — that’s not by accident. There ARE plenty of things that can be purchased from those sources that will do a great job, or in some cases is the only place to purchase certain things. But in general, not any of the following categories of items. So again — do yourself a favor and get the things that need to be real from community-vetted sources.