Open listings are very rare in the residential sales market, primarily because most MLS broker databases and even many public websites won’t allow anything but exclusive sales listings.
As a result, buyers typically have an easier time navigating the sales market because there is only one agent listing each property, which results in far less confusion vs the rental market.
For example in NYC, REBNY only allows exclusive sales listings to be uploaded to the REBNY RLS broker database. Furthermore, public search websites like StreetEasy will only accept exclusive sale listings, and will sometimes ask brokers for proof of exclusivity. As a result, virtually every residential sales listing in NYC is an exclusive listing.