The average cost of any project depends entirely on the general location of the project, the type of materials finally selected, and timeline required. Any location-specific issues (steep driveways, elevators, etc) can also affect the average cost.

We would obviously need more information!

I’d add that the pictured countertop looks thicker than standard, whether due to a built-up mitered edge or to the purchase of extra-thick slab(s). Either way, that adds a lot of cost. And that thicker counter needs sufficient support under the span where the stools are, so add more cost for that. Then you need the expertise of a top-notch fabricator. That counter may be beyond the skills and equipment of the average fabricator so add to your budget for a high-end fabricator who will charge more.

And don't forget the electrical and plumbing needed (assuming they aren't already there)!

I would say between $30k-$40k. This is a custom piece and it appears to be White Oak which is really pricey right now. The countertop has a custom edge band wrapped around it, maybe metal? Add to this the contracting, design fees, fabrication, etc.

That is gorgeous. Big money. Get a couple bids with your overall kitchen components and flooring so you spend your money wisely. What’s your budget for this island? Kitchens are the most expensive rooms in a whole house. Good luck.

My mistake. I actually meant 10 feet long with a width of 48 inches.

It was obvious that it was 120"x48", which is what all of the posters are referring to in their costs. There was no need for the second post.

I like the piece. It's going to be custom or custom with stock cabinets on the rear side. If I were considering this in the US, I'd contact Amish cabinetmakers in my Midwest area for the woodwork. Then a counter fabricator for the top. Plumbing and electrical would be separate. It's a major project.