We bought these to complement the set of beads we were given in a giant tub from IKEA which didn't have any greys. These genuine Hama beads have smaller holes in the middle than the lookalike ones so they have a slightly different look on the melted side but they work fine together.
We looked at buying these straight from the Hama bead website but the postage makes it uneconomical. These prices are similar but with reasonable postage which is a helpful service to the small buyer.