Based on the provided data, we can observe that the coin in question has had an average starting price of 23 euros in previous auctions, with an average closing price of 38 euros. The current condition of the coin is 75 (VF).

Taking into account the coin's previous auction prices and its current condition, we can estimate a maximum purchase price. Since the current starting price is 25 euros and the condition is 75 (VF), we can consider an estimated maximum purchase price around 40-45 euros.

It is important to consider factors such as demand in the coin collectors' market and the specific rarity of this coin, as they can influence the final closing price. Therefore, it is advisable to pay attention to the auction and adjust the offer accordingly.