Where did you get it?I made one with matrix nand reader. Works pretty damn good.
There is nothing on ebay i've checked they're all from USebay maybe or any team executer official re-seller, or maybe there are some in the b/s/t section on this site
i made one of those as-well and was a fun project. down side is no software for flashing aces (unless somethings changed recently). I think i flashed one of two cool-runners with it and haven't used it again.lol. imho its worth getting a jrprogrammerv2 . you can flash all chips and really only costs a few bucks more. not to mention features like Rater, and flashing boot sounds to your xbox. but yeah if you really need to pinch pennies the matrix is the way to go.
btw modchipcentral in canada has jrps and ships them world wide.
You can change xbox beeper sounds?
You can flash pretty much everything, there is a software link in youtube video. Very easy to use. Very basic, but super noob friendly and hassle free.