You save some Euros on that refurbished Black Panasonic GX7 for 399 Euro sold by trusted German seller on eBay (Click here).
Olympus deals at Amazon Germany (Click here) and Amazon UK (Click here). In detail we have
Up to 150 Euro off on Olympus lenses (here at Amazon.de).
50 Euro off on the E-M10 and E-M10II (here at Amazon.de).
100 Euro off on the E-M1 and E-M5II (here at Amazon.de).