There's quite a few similar ones but I used this as a secondary screen for a few years. It got somewhat roughly handled, but if you plan ahead and mount it correctly (and not try to work on it while its plugged in as I did) its a good monitor, which is remarkably good looking. No audio as far as I can tell.
DX tends to ship anywhere and shipping's part of the list price.
HDMI Port? Check. Also has composite or VGA if needed
Low price? Somewhere around 60 euros
Works with a RPI? Sure
No built in audio though, and its JUST over 10 inches.
There's a lower resolution 7 inch option as well I believe, which would be cheaper, but its something janky like 640x480.