Selling house on Opendoor?

Does anyone have experience selling their house to Opendoor? It sounds like a super convenient service since you don't have to wait months for a potential buyer to come along, nor do you have to stage and show your home to interested buyers.

I looked around at reviews online, and they seem to be skewed very negative.

My two biggest questions are:
  • How much equity can I expect to "give up" for the convenience of using Opendoor?
  • Aside from giving up x% in equity for convenience, is there anything else to be on the lookout for?
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