See it here
on the Peterson web site. It is now discontinued because it has been superceded by the Stroboclip HD which sells online for between £48 and £79.
I paid 68 euros for it from Thomann 5 years ago. However, I take a bottom E from the keyboard and then tune by ear so I still haven't used it.
Asking price: £30 plus £3 P&P but feel free to make me an offer. I will be back in England soon so will post it on 11th November to save having to send it by international post during October.