Marshall Bluesbreaker Mk 1 pedals go for good money here in the UK. I've sold them for anything between £120 to £200 and some of these have gone overseas as well. Most of the clones end up being disappointing. The Analogman King of Tone for instance has a lengthy waiting list, sells s/h for £350, is based on the Bluesbreaker Mk 1, and has never failed to disappoint me in that it's no better than the pedal it's inspired by and over double the price.
The Rawk D King of Blues is not expensive. It's under £100 new from the seller in Greece. It's nice seeing these newer sellers coming through at such good prices (Vick Audio pedals are now for sale through Atlantic Guitars in the UK at £100 and under per pedal).
The King of Blues is beautifully wired. It might sond strange to say that wiring is beautiful but this is. The yardstick for great wiring is still the Paul Cohrane Tim v1 I had but this is right up there. So so cool.
Soundwise... it's a Marshall Bluesbreaker. It's got a bit more fidelity than the original, perhaps a bit more headroom, but it doesn't get too clear and clean, which is where most BB clones fall on their ass. It still rocks: too many clones clean up too much. If you really want a BB pedal and don't want to sell out big money for an original, then get this. You won't regret it.
No audio demo of this one as I really can't be bothered to make one and you don't need to hear me play the same badly timed nonsense I always do.