I have to sell:
512KB RAM expansion port (to get 640KB with your inner QL RAM) => 37€ + Shipping
MicroPicoDrive set (driver + cartridge + screw separator) => 35€ + Shipping
RGB2VGA Adapters (with case and video cable, only 4 units available and I won't do more)
All have been tested.
Shipping everywhere with tracking number (unless you insist in regular one without courier guarantee nor tracking number), usually it is less than 10€ to any country.