I ordered a world map wallpaper from MuralsWallpaper, a company based in the UK. It was very expensive and large (13 feet by 7 feet, or, 4.1 metres by 2.4 metres). It definitely wasn't something I could install on my own, having never done wallpaper before.
In Oct 2019, I got a number of different quotes from highly rated installers, some with their own TV shows! Vlad was responsive to my messages, and his quote included primer and adhesive. He wasn't available for 3 weeks, but I didn't have a deadline. We re-confirmed the price and timing a few days before.
Vlad showed up on time with his tools, and started work right away. The wallpaper I ordered was custom printed on a really long roll of paper, so the first step was to cut each panel to size. Because the design was a map, it was important that each piece was precisely aligned. You can see the perfect job that he did from the closeup photos, where the seam is nearly invisible.
I'm extremely happy with the job Vlad did, and my son is thrilled with the result. If I ever need to cover more walls in my home with wallpaper, I'd definitely give him a call again.