I am no longer offering this as a kit but you can build it for yourself from scratch by following my eBook, or you can buy a quick-start kit from me. The quick-start kit is a pair of laser-cut acrylic sheets for building the GPS+ panel. Please note this is all it is, so you will need to source everything else yourself! I have reduced the cost to £10 plus shipping. Shipping weight is less than 500g. To buy, please contact me by private message.
You will also get (by email) a copy of the construction manual. (This is essentially the same as the eBook but without the appendices and the chapter on cutting and drilling the acrylic.) You can freely download the graphics templates and the Almost Aviation LINDA library from this forum. You will also find a complete component list with links to the specifications and the suppliers I used.
Here is a picture of the acrylic sheets, laid on top of each other as they will be for assembly. The bottom sheet still has its protective film on, which is why it appears white. (This is actually a picture of the autopilot acrylics, so don't worry that you can't recognise all the right holes for the GPS!)
Here's another picture showing the quality of the laser-cut acrylic: