The ones in the ebay add are the external style 3/4 ton hubs, they are good, not that good but I would take them any day over the Warn premiums.
But for me I'd rather keep the internal style hubs and locks, and I do have a bunch of the spicer hubs for those.
The older chevy's never used the internal style for the HD D44 so the resto guys will need them if they want to stay year correct.
And since everything is offer and demand, these hubs will fetch a good price, same as a 203 32 spline or 10 spline, because people want them for doublers, I have seen people sell the input shaft alone for a couple of hundred dollars, I sold mine complete with the adapter for $100, go figure.