Are you thinking of buying anything from them?.
Let me tell you about my experience with them, on the 3^rd of February 2012 I placed an order for an FCU worth 2585€, it took four months for it to arrive, I thought it was a long time but I supposed they had other orders to attend to before mine, as long as it arrived in one piece and everything was OK I didn’t mind so much, but that was the problem, it arrived in one piece but it certainly wasn’t OK, I counted no less than seven problems that made it useless to work with, OK I thought, I get in touch with Mathias and get it fixed, wishful thinking, I sent him the first email on the 29^th of June and an average of four emails every week since that date and today is the 24th of February 2013. I’m still waiting with no hope.

I still have over 21,000€ to spend in products to complete my simulator and I’m really surprise a serious company would turn this down. Maybe this is an isolated case, I would have to look in the net for other cases but just in case if you are thinking of buying anything from them you better get some guaranties.

(Update)

I’ve been looking in the Net to see if other people had similar problems with cockpitsonic and I can tell you now that mine is not an isolated case, a found other cases like mine, and when they send messages to Mathias it also fell in deaf ears. It’s a good way of loosing good customers.
I include a short video of the FCU so you can see some of the faults: retro illumination not working, displays turned opposite way to the potentiometer, panels badly cut, caution warning not working on F.O side, etc.
 
The simulator may look good but if it doesn’t work it’s totally useless.


Update 28 June 2013)

I lost all hope of ever getting an answer from Cockpitsonic, so I’ve giving up, if they don’t want my money, others do. At the beginning of September I will be buying the throttle unit from Virtual Aviation Systems, I discover them a few weeks ago and their products look real nice (http://www.virtualaviationsystems.com/), I will update as soon as I get the unit.