The playhouse is actually bigger than I expected. I wonder if you can just repurpose it as a mini shed, or make it bigger to be one. If you have a lot of buyers, I wonder if it will be acceptable to agree to a lot of them and have them come in different days or time. Inform them their place in the list and if the first one doesn't take it, they can get it.
It is big, but not tall enough inside for a storage, as I can't stand in there. However, that is something on the list to get in the future.
Ah, that's a shame. Goodluck on being able to sell/dispose of it.