To estimate a maximum purchase price for the coin in question, we can consider several factors based on the provided data:

1. Coin Condition: The coin has a condition rating of 80 (MBC+), indicating that it is in relatively good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Previous Auction Prices: By observing previous auction prices for coins with a similar condition (80), we can see that they have reached varying hammer prices. For example, in past auctions, coins with a condition of 80 have had hammer prices ranging from 25 to 220 euros.

3. Average Hammer Price: The average hammer price for this coin is 153.86 euros, providing a good reference for the expected value.

4. Average Starting Price: The average starting price is 62.11 euros, indicating that auctioneers are willing to start bids at a lower price, but this does not necessarily reflect the true value of the coin.

5. Auction Trends: The coin has been auctioned 101 times, with a high sales percentage (92 out of 101). This suggests that there is consistent interest in this coin, which may increase its value.

6. Estimated Prices: In previous auctions, estimated prices for coins with a condition of 80 have been up to 50 euros, which may indicate that buyers are willing to pay more for coins in good condition.

Based on these factors, an estimated maximum purchase price for the coin in question could be in the range of 150 to 200 euros. This is based on the average hammer price and the condition of the coin, as well as the trends observed in previous auctions.