Exactly that - the sellers sell both the Conc card and the Pi’s - the latter for >>£/€/€100 and make a killing! Not suprising give many cards used fakeGPS and ended up on Helium’s deny list and even those that didnt now face:
So not even covering electricity bills!
Many of us have said for years they look forward to buying cheal GW’s/parts once bubble burst! 
“It’s an ill wind that…” or perhaps “Every cloud has a…”
Indeed - an option to evaluate - but do I not recall seeing a year or two back that it was only supported as a potential LoRaWAN ‘router’ (Gateway) platform on a limited set of Mediatek MCU’s or was it that those MCU’s only saw a limited OWRT release set…? 
as you know not too up on s/w side of life 