I open this topic because probable I'll make some new Qubide.
The information of this project is here:
http://hardware.speccy.org/temp/qubide-i.html
The new Qubide has two differences from the original:
- It doesn't have expansion bus.
- It has extra 512K RAM if you want it.
I suppose that price will be similar other I made ( 40-45€ + shipping)
This is a photo of the Qubide:

In this picture I put another PCB I made. A rom-eprom kit. This kit allows to replace the 2 original rom with a 64K EPROM ( typically a standard 48K ROM and TK extensions sets)
The information in this project is here:
http://trastero.speccy.org/cosas/JL/ROM ... OM-QL.html
You don't need this kit to run Qubide in a sinclair QL but some program may require the TK extensions to work. This kit was around 8 €. If there are people interested in this kit, maybe I can make it.
I will open a period of one month. If people are interested, please send me a private message telling me what you like (Qubide, Qubide + kit, kit) so I'll make an idea of the proyect.
Cheers
Jose Leandro