Outboard question

I recently got a parts breakdown from egag for the 7-1/2hp. I found the original pn for the impellers. Went back to egag and searched for it. Several hits, don't know how one guy thinks he can get $58 for the same NOS OEM impeller as another seller had for $8. For $8 ea, I bought all 3 that guy had.
There was one guy who was $44 but that was a kit with the housing and the plate under the impeller so at least it was more than just the rubber octopus itself for the extra $$$$ he wanted....
Seems that octopus fits a lot of engines.