Sue. The charity shops here are full of that same Czech pressed glass. It's the dealers here, well two or three, that have the Skrdlovice, Mstisov and lots of Chribska. I have some huge pieces of Chribska some bought for £15.00. However I did buy this piece of Monart in a charity shop .. so .. I have been getting some good ceramic finds recently, but that's for another board.
I think if you buy quality it's always an investment, it will go up and down then up again. Look at chintz which is now having a revival.