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+).

The average starting price in previous auctions was 73.38 euros, while the average final price was 146 euros.

Taking into account the previous prices of this coin, its current condition, and the fact that it has been sold in the past, we could estimate a maximum purchase price around 150-180 euros.

It is important to note that the final price in an auction can vary depending on factors such as demand at that specific time, competition from other bidders, and the perceived value of the coin at that moment.