This kit falls short, because the adhesive glue in the copper sheets does not conduct electricity. You need to solder them together or something.
This is not mentioned in the product description either.
In my opinion you could expect more regarding the high price of the product. You can get everything here from a normal hardware store. Therefore, as is, this product is way overpriced.
On the other hand it has good assortment of stuff and instructions. So the idea is good, just not executed properly.
If you want copper tape with conductive glue, you can use Allparts Copper Shielding Tape Strip.