OP,
From your posts apparently your only option is to run a second coax to each receiver and add a multiswitch which should be less than $50. Why do you insist on one coax only?
SWM is one coax but it is not the same technology and the receiver(s) and mini clients must support SWM. With a SWM and a single cable to each SWM compatible receiver you can get what you want but certainly not for $50. The other SWM option is the Genie with it's main receiver and multiple mini Genies at each remote TV.
There is a wireless mini client SWM option but that is another subject.