I got these, dunno what you consider inexpensive…
I have had zero trouble with them and they work way better than I thought, maybe there’s a GPS satellite right over my house or something. 
Compared to the old days of SA, finicky reception and $$$ pricey gear (and nothing like the module above), I was happy to shell out and never look back.
I am just using the patch antenna on the module but it has a connector you could use for a remote antenna or at least one over in the window if you needed.
a7