Reddit mentions of Ook , Copper, 10 Piece

your original statement comes across as a bit aggressive over the price, hence my response. HOwever, let's break down some costs. I am assuming 16 gauge wire because that seems to be fairly common for a structure like this. THinner would be more jewelry thickness and I don't think that would hold as well as this does once it started going out into the branches. I could be wrong but the difference will be about $2 every 25 ft. so not a huge deal.

So on Amazon I can get 25 yrds of 16 gauge for $5.50. converting to meters that is 7.62 meters for £4.20 (I am using US prices so the price may vary in the UK you would have to look that up). So to get 340 meters I would need 45 spools which would cost £189.

That's just the cost of the wire. So that is £271 left to pay for hours of work and specialised knowledge and experience and tools to be able to create the final product.

It is reasonable to assume the price for the wire will vary based on locations as well as the artist likely having a supplier they can get more of a bulk order instead of paying per small spool, but the price will still be limited by the value of copper itself and certainly won't ever be cheaper than copper is worth by weight.

When doing something specialised, especially if it is high quality and skillful a general rule of thumb for the person creating the item or product is materials x3 (or doing the math based on cost of materials + set hourly rate x hours needed to create the product). This will help cover costs of overhead and materials and still allow the person to make a little money to make it worth creating the product (especially if they are doing it as a primary source of income. Because if you can't make a profit to pay your own bills you aren't going to be able to continue making the items very long).. THis artist is charging less than that rule of thumb. So it's far less expensive than it may seem.