Ha! The eternal quandary - how to price stuff to sell it - post an ad and gone in 20 seconds, likely could have asked for more dollars, but too late. Still have it for sale two months later, likely priced too high. Up to you whether most important to you to squeeze out last dollar from that one special buyer, or whether you just want it gone. Is no "price list" - is no "rules". Between you, the seller, and the individual buyer - how badly you want to move it versus how badly he wants to buy it - determines the price of the exchange, usually. I think most all that you list is more or less available, or at least equivalent is (or was) - so likely 80% of store bought new price after taxes, would be good starting price. If rare, short supply, or no longer available, then buyer response will let you know if your price was appropriate. What it was purchased for in the past, is close to irrelevant (up or down) regarding what it will sell for today.
Post #3 appears to have done some basic research - no clue where you are, to know if those numbers are similar in your area. I suspect pricing for same thing much different in Rankin Inlet or Whitehorse, than in Montreal or in Calgary. Do not overlook shipping cost and how will you manage that - can become significant dollars, if not dealing face-to-face. I do not have much experience at selling ammunition, because so difficult to find any way to send it out of here - I am not a store/business with contracts with couriers - pretty much no way that I know of that I can ship off ammunition, primers, powder, etc. Your situation might be different.
