CZ 457 22LR and 22WMR barrels

I have 2 CZ 457 barrels 

1 -New ,never fired 24'' long 22LR barrel with iron sites.Price is $ 250.00 CAD .Sipping not included.

2-Used,about 100 rounds down the barrel,24'' long ,threaded barrel with iron sites.I would trade it for a 20'' long 22WMR barrel with iron sites.

Thanks for looking