Hi rob2121,
I switched your post to its own topic since it was about a different mattress.
What size are you looking at?
The Sleepys site and the Tempurpedic site both list the Weightless Supreme at $1899 for a twin and it goes up from there.
While the Tempflow uses higher quality materials overall and has a better airflow design … if they really are that close and the Tempurpedic price you listed is accurate then your final choice may be a little more difficult.
Phoenix