Dan Ariely has been almost completely discredited and that entire field of research in general has had almost no studies replicate.
https://www.buzzfeednews.com/article/stephaniemlee/dan-ariel...
https://www.buzzfeednews.com/article/stephaniemlee/dan-ariel...
For what it's worth, the placebo study relevant to this discussion does not seem to be on the list of disputed studies from what I can tell [1]. That said, I'd be curious to know if that one also failed to replicate, please share if you have knowledge of this.
[1] https://en.wikipedia.org/wiki/Dan_Ariely#Accusations_of_data...