Based on the data provided, we can observe that the coin in question has had starting and estimated prices ranging between 25 and 150 euros. The average starting price of previous auctions was 74.29 euros, while the average final price was 147.14 euros.

Considering that the current condition of the coin is 30 (BC+), and taking into account the previous prices of similar auctions, as well as the fact that it has been sold in 7 out of 9 auctions in the past, we could estimate a maximum purchase price around 200 euros.

It is important to note that the final auction price may vary depending on factors such as demand at the time of the auction, competition from other bidders, and specific interest in that particular coin.