How Much Does It Cost to Install a Wall Oven?

We're asking readers to share how much they spent on a given item, project, or upgrade in the kitchen. We hope this information proves helpful to anyone needing to get a basic sense of how much that something costs.

Today's query:
How much does it cost to install a wall oven?

If relevant to you, please share any and all details on buying and installing a wall oven. What did it entail? How much was the labor? What problems came up?

(Image credits: Faith Durand)