E-Bay does NOT allow the sale of ammunition and the prices tend to be well over what the real worth is.
If a full box of 50, it is probably in the $30 to $50 range, depending upon how much damage to the box and the condition of the cartridges inside. Many of these old boxes have corroded cartridges as they were made of copper and are subject to moisture and that detracts from the value.
Also, this is a Milsurps Forum. You might be best having it moved to the Rimfire Forum.