Affordable Travel at $20 a night?  Impossible?

I have just been watching a CTV program about fraudulent travel clubs who are ripping off people who want to travel affordably.  When I "googled"  travel or vacation club scams, I was stunned:  apparently there are scores of people who are being victimized by unscrupulous "clubs" which promise cheap travel at unbelievable rates.  The slogans "do your due dilligence" or "if it's too good to be true, it probably is" still apply.  

Let me assure you:   Home Exchange and The Affordable Travel Club are too good to be believe.  One offers an opportunity to exchange your home for someone else's home,  the other charges you $60 a year to belong and then to benefit by arranging an overnight stay for a mere $20 a night.  Recently, my wife and I spent 4 nights in Adelaide, Australia and 4 nights in San Francisco, USA with wonderfully hospitable hosts for a mere $160. 00   That is,  $160 for 8 nights with breakfast and a glass of wine in the evening and a tour of the area thrown in!  There is, of course, always the possibility that we may get a call from someone in the world who wants to avail himself/herself of our hospitality at the same rate. And we will be more than ready to welcome them because of the many benefits we have already reaped from The Affordable Travel Club.