Hi Jessy,

Thank you for contacting Mearto with your appraisal inquiry.
Quasar inflatable furniture comes to market from time to time and has a small but devoted following, typically around people who were growing up in the 1960s. The Because this generation is aging out, it is likely more will come to market in the coming years but it's not immediately evident if there are new collectors (ie who were not of age when this was first produced). In short, while there will probably be a large supply of this soon, there may not be demand to keep prices high.
Though there are several pieces of Quasar Khanh Aerospace furniture available for purchase through online sellers (Chairish, 1stDibs), the prices they are asking for are RETAIL whereas the appraised values Mearto provides are Fair Market and based on recant prices of similar works sold for at auction. Considering those, this has a Fair Market value of $3,000-5,000.
Based on the photos and information provided, and subject to examination, this is:

A vintage Quasar Khanh Inflatable Couch
"Aerospace" collection, made in France, 1969
White PVC
Of boxy form with floating back and arms over a channel tufted bench seat. Marked.
Overall height 26-1/2 inches; seat height 14 inches; length: 70-1/2 inches; depth 35 inches
CONDITION: This sofa appears to be in generally good overall condition.
PROVENANCE: Unknown
$ 3,000-5,000*
*represents a fair-market value for auction purposes; retail or asking price may vary.

Please let us know if you have additional items to appraise, or questions/concerns, and thank you again for using Mearto.
~ Delia