I'm a FiOS user who ended my TV service about a year ago and took the opportunity to ditch my ancient Actiontec router and upgrade from a 75 Mbps internet plan to 300 - after I negotiated a decent deal with Verizon. Verizon tech installed a CR1000A router in the basement (because that's where my ONT is) and an E3200 extender in my 3rd-floor office (where I work on my desktop computer), connected by coax.
The arrangement works reasonably well, but I'm not thrilled with the (100-150) speed I get on my laptop, which I often use on the 1st floor - one story up from the router. I don't want to pay Verizon more to upgrade my plan, but now that I don't have cable TV, I have a spare coax port in that room. Would it make sense to buy an additional extender and put it there? If so, would a reasonable choice be something like the goCoax MoCA 2.5 adapter (https://is.gd/WFsvr1), which costs about $60?
Looking at this more closely, I think the goCoax adapter I mentioned, which I'd considered back when I needed an ethernet adapter for my office desktop, won't work for what I want now -- namely, a wireless extender that's compatible with Verizon's FiOS router. Is it possible to get one of those inexpensively (and without buying or renting it from Verizon)?