@ dmqdarts
That looks good. Can the case easily be opened for cleaning the PCP and the silicon pad?
On eBay you actually seem to experiment with the price. Yesterday the DMQ Fusion was much cheaper in one of your auctions. 
Edit:
I have a proposal for a little software upgrade: A simple calculator function for other games than X01.
Yes the case can be easily opened, there are 6 screws at the back, inside comprises of only 4 things, Led Display, Keypad PCB, Silicone Keymat and a plug in/out Interface Cable.
On eBay we run fixed price listings, we also every so often run an auction to give buyers a chance of getting a DMQ Fusion or DMQ Titan for a lower price.
As for your proposal, we have already upgraded the Scoreboard based on user feedback and suggestions, we've added extra In-Game Statistics, the Save Game Feature as well as the ability to choose sets as best of 3. To include other games as you mention, would be possible so long as it can be displayed on our Led Display, see below we decided to manufacture a Custom Led Display rather than using a cluster of off the shelf 7 Segment Displays.
[Blockierte Grafik: http://www.dmqdarts.com/3-small.jpg]