Based on the data provided, we can observe that the coin in question has performed well in previous auctions, with final prices exceeding the starting and estimated prices. Additionally, the coin's condition is rated at 80 (MBC+), which is positive.

Considering the previous prices of this coin and its condition, as well as the fact that it has sold in the majority of previous auctions, we could estimate a maximum purchase price around 60-70 euros. This range is based on the highest recorded auction price and the upward trend in prices for this coin.

It is important to note that the final auction price will depend on various factors, such as demand at that specific time, competition from other bidders, and buyers' willingness to pay a premium for a coin in good condition with a positive auction history.