The last shipment is arriving soon. After that no more M305's. You will see the price rise rather quickly I think, at first out of greed and speculation on the owners part, after that supply and demand will see the price increase.
Believe that Polytechs and Norinco's go for aroun $800 in the US. Prices will probably be similar here once people realize the only alternative is to buy a $2000 cast Springfield.