It's closer to a $250,000 premium at current rates. That's more in line I think with what the market would expect for these. Even with a $50K premium though, there are a lot of Casascius coins I'd sell for that... The only ones I wouldn't are probably the 10 BTC coins. When you're discussing fiat sales though, everything is dependent on the Bitcoin exchange rate. If BTC goes to the moon then obviously this would be a dumb sale, but if it drops a lot then the seller would look like a genius. In the end, the premium is so dependent upon Bitcoin's price, it's almost like the coin doesn't really matter at all. At least in today's market.
Technically the premium is actually less than $50k. BTC price at auction end is the best comparator to market demand value. As the auction ended on 11/14 with BTC at $66k based on auction end time and not 11/19 BTC at $58k, though could argue whales know where price is going
Auction house conveniently includes the bitcoin value at auction end as well:
https://www.greatcollections.com/Coin/1053185/2011-25-BTC-Casascius-Bitcoin-Gold-Plated-Coin-PCGS-MS-67Forks were not calculated in the valuation and on a large denomination this is give or take $20k. Assuming you don’t butcher the label when you peel, you’d probably get $5k, so with shitforks and peeled value, you’re looking at a $25k premium which is very unfortunate given how incredible an unpeeled 25 Cas is when it comes to rarity and diamond hands. Meanwhile I would love to see these coins from scarce city that are “selling” for 75% premiums go up on these auction houses LOL I’ll bet the house on the under. Until then, hopefully we can see more Cas here and legitimate websites to determine value with BTC in this price range.