Based on the provided data, we can observe that the coin has had an average auction closing price of 75.36 euros in previous auctions. Additionally, the current condition of the coin is 70 (VF-).

Considering that the average auction closing price has been 75.36 euros and that the condition of the coin is relatively good (70), we could estimate a maximum purchase price around 80-85 euros. However, keep in mind that the final price in an auction can vary depending on demand and other factors, so it is important to stay alert during the auction to adjust your offer accordingly.