Seems like a good price too.
https://www.basschat.co.uk/topic/431206-alembic-f-1x-tube-preamp/?tab=comments#comment-4133192

I would be VERY careful with this one. Supposedly I purchased it (paid for it, never received it, still have an open issue with eBay/PayPal pending).
Here's the listing - check the serial number, it's the same one.
http://www.ebay.ie/itm/392771485169

This listing was ended by the seller because there was an error in the listing.

And the guy is trying to sell it YET AGAIN.

DO NOT BUY FROM THIS GUY.

https://www.ebay.ie/itm/Alembic-F-1X-Tube-preamp/392816313525

Yikes, I hope you get a refund. Out of curiousity, how long has your issue been registered with Ebay?

I purchased it on 21 April and then registered the issue on 14 May when I hadn't gotten any responses in 2wks (last one was "shipping it tomorrow").
He has until 3 June to respond. I'm pretty sure I'll get a refund eventually, as I have solid proof of payment through PayPal and a number of listings for the same item (showing the same serial number!) after I had paid for it, including the currently active eBay listing I posted yesterday.