Hi Imaya,
Outside of the suitability of a mattress in terms of PPP (Posture and alignment, Pressure relief, and Personal preferences), a mattress is only as good as the quality of the materials inside it. The problem with most hotel beds is that they tend to be lower quality versions of consumer mattresses with unusually high markups because hotel mattresses don’t need to be as durable as consumer mattresses (they aren’t used as often and are replaced more frequently). There is more about hotel mattresses in [url= https://forum.mattressunderground.com/t/hampton-inn-mattress]post #3 here[/url] and the other posts it links to but in general I would never buy a mattress where you aren’t able to find out the quality/density of the materials inside it or where the odds are high that you are sleeping on lower quality foams that will soften and break down much too quickly. Without knowing the quality of the materials inside a mattress there is really no way to identify any weak links in the mattress or make meaningful comparisons to other mattresses.
They may be better value if you are buying them at cost (some of the wholesale cost lists are linked in the posts I linked that show that some of the Serta hotel mattresses are under half the price you mentioned) but you are still looking at a blind purchase of a lower quality mattress that I would consider a high risk choice in terms of durability and quality of materials.
You can read more about airbeds in general in this article and a little more about the SAT bed in post #2 here. In general I would tend to avoid them although the SAT bed is self adjusting so it’s among the better versions of a mattress category (airbeds) that IMO has questionable value overall.
Phoenix