I've recently imported some rear lights which mimic the B8 LED style. I've spoken to the supplier and he's going to get back to me with a price for importing several sets.
Read more here: B8 style LED rear lights. | Vorsprung Collective
There are a few options available - red/clear like mine, red/smoked and all clear.
As a rough guide, you'll be looking at around Ł300 though I'll confirm when the supplier gets back to me.
Ideally I need to have 10 names down, so if you're interested, drop me a PM.