Investory wants to buy rental property from me. how would you...

[Steve S.]

negotiate it?

I expect they will do a walk through and say "how much you asking?".  For argument's sake this property lists for $420,000 on Zillow.  Thats of course a data point but not necessarily meaningful.  I bought it for $300k.

I have a tenant in the property.

Would you ask them to make you an offer first in response to their question?  Throw out a bit of a high ball number of say $450,000 and see what they come back with?

They say they want to buy in cash.

I'm usually on the buying side so welcome thoughts and experiences as the landlord seller since I've not done that before.