I looked at getting a nice small office for my backyard. I looked at prefabs, thinking they should have been the way to go. They were all super expensive, produ

I looked at getting a nice small office for my backyard. I looked at prefabs, thinking they should have been the way to go. They were all super expensive, products. I'm a pretty well off guy, but I don't really want to pay >$200k for an office. I ended up buying a 6x9 shed (https://cedarshed.com/products/cedar-studio-shed https://cedarshed.com/products/cedar-studio-shed) for about $5k delivered. I then spent about $9k to have it assembled, outfitted with drywall, filled with noise cancelling insulation, electricity to the unit, lights, plugs, blinds, laminate flooring, and painted. Most of the work was done by 2 handyman for about $5k. Electrical was about $1k. Materials were about $1k. AC including installation was about $1.5k. I helped out, and it was definitely some work on my part, but in the end it turned out great and was all in about $14k. All this was done in the last year. Now this isn't directly comparable to their product (no bathroom/kitchen and it is about 10% the size) but I am tired of all these super luxury prefab homes, and I want to see costs come down for construction.