Based on the data provided, we can observe that the coin in question has had varying starting and final prices in previous auctions. The current condition of the coin is estimated at 30 (BC+), indicating that it is not in the best condition, but also not in the worst.

The average starting price in previous auctions was 41 euros, while the average final price was 104.25 euros. Additionally, it has been auctioned a total of 9 times in the past, being sold in 8 occasions and not sold in one.

Taking into account the previous prices of the coin, its current condition, and the fact that it has sold in the majority of previous auctions, we could estimate a maximum purchase price around 120 euros. This estimation is based on the price history and the demand the coin has shown in previous auctions.