I would say it isn’t unique for the area, but with the price it is at it’s definitely not normal. Most of the comps are incredibly high priced (though nicer homes) homes with less acreage.
That kind of waiting is the worst. Is it the sort of place where it's unusual for the area? I know the appraisal for a house in a big neighborhood tends to be much faster/easier than when you have a more unique situation.
We had one of those unique homes when we moved and the Realtors were all over the map on what they thought we should ask. There just weren't any comps. We finally chose a Realtor who specializes in lake properties and sold for literally 3x the lowest estimate (a Realtor who happened to live nearby and we have good reason to believe wanted to buy it for herself).
I feel like the appraisal was done by taking the selling price and then justifying it because both parties were in agreement over the value and the buyer had spectacular credit.
We’re just thinking the appraisal people were mad that we waited until the last day of the option period to pay them, but we also had some major stuff come back that we needed to make sure the sellers would fix before we paid that.