With glass, you are always holding the original in your mitts - you just don't always know what origins it has.
If it's a nice piece, it will always be a nice piece, no matter where it came from.
Lots of the Polish stuff there is fantastic.
(Look for the heavy, beautifully made bits with Krosno stickers on.)
I have bought quite a few things.
Several Beranek Tropical Flowers, Caithness PWs, fabby Krosno cut glass tumblers - even a massive Jablonski sculptural piece. Signed. (He signs everything.)
And a massive "Vetre'd'arte Murano" (that's what it says on the sticker, or something like that - it's upstairs - too far away to get) mushroom, which probably came from a lot further east than Italy.....