The $48 rf chip seems to be an outdated archived link thats no longer on their website. The $20 chip is the same chip. Ecotech decided that they wanted to provide the rf chips at cost to their costumers to make it easier on the wallet for those with older QDs to become mobius ready. Hope this clears everything up.
did the $20 chip work? I am trying to upgrade an MP40 QD that won’t show up in legacy devises