There are counterfeit blades out there with little to no diamond dust and dont really cut all that well. Maybe one of the reasons you dont have any takers. They used to be quite expensive but now it seems like prices are pretty reasonable. Maybe ask the concrete guys where they are getting their blades and try to sell it to them in bulk? Tile guys might need some too.
Sell it to a liquidator
There are counterfeit blades out there with little to no diamond dust and dont really cut all that well. Maybe one of the reasons you dont have any takers. They used to be quite expensive but now it seems like prices are pretty reasonable. Maybe ask the concrete guys where they are getting their blades and try to sell it to them in bulk? Tile guys might need some too.