I have two used Neptune Wav pumps for sale with 2 brand new impellers. These pumps are about 10 months old. One of the impellers started to stick a bit, so I got two new ones (still in packaging) when I decided to switch to another powerhead. These are just the Wav pumps with the new impellers, no 1Link or anything else. Both are in good shape. Note: you need an Apex with 1Link support to use these. I'm selling them as a package (both pumps with the new impellers). Total price for both, shipped in the continental US, is $225.