Based on the data provided, we can observe that the coin in question has had an average auction closing price of 372.36 euros in previous auctions. Additionally, the current condition of the coin is 80 (MBC+).

Considering that the condition of the coin is good but not excellent, and that the average auction closing price in previous auctions has been 372.36 euros, we could estimate a maximum purchase price around 400-450 euros. It is important to note that the final price may vary depending on factors such as demand at the auction and competition from other bidders.