A lot depends on whether you are buying from a full service dealer or selling to a low end dealer who will have to hold the coin for a long time before finding a market for it. Stobi bronzes are not popular and this is not all that nice so you would be lucky to get the number echizento quoted. I see the Hadrian as a bit nicer and would buy it for $50 but would not be surprised if someone would go $76 or so. Condition is a lot but not everything. Who is selling it is important, too. In the stock of a respected dealer who guarantees coins for life, the Hadrian may be $100 but in the hands of someone unknown and selling as-is, $50 is not all that low. Prices on acsearch tend to be high end because the listings are mostly top end dealers. Listings on VCoins are often high because several of their dealers do more dreaming of selling than actual selling. Many coins there at $100 wouldn't interest me at $10 while others sell quickly at the asking price. It is a question of whether a dealer is trying to make a 50% profit or a 500% killing.