Are you fishing a spey rod or single hander. The lines you posted links to are spey lines.
If you are fishing a single hander, look at something like these.....
http://www.rioproducts.com/fly-lines/freshwater/sink-tip/versitip
http://www.tackledirect.com/airflo-freshwater-multi-tip-fly-lines.html

I'd check Ebay. I just bought two now discontinued Airflo lines from England the other day. Only cost me $10.00 for shipping.
http://www.ebay.com/itm/Airflo-Freshwate...=item4cfb2c8ed3