To estimate a maximum purchase price for the coin in question, we can analyze several factors:

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

2. Auction History:
- The average hammer price for coins with a similar condition (80) has been approximately 90-130 euros in previous auctions.
- In the most recent auctions, hammer prices have ranged from 55 to 170 euros, suggesting there is a considerable range depending on demand and other factors.

3. Starting Price and Estimates:
- The current starting price is 60 euros, which is consistent with the average starting price of 60.36 euros.
- The average hammer price is 93.85 euros, indicating that, in general, coins of this reference tend to sell for above their starting price.

4. Sales Trends: The coin has been sold in 13 out of 15 auctions, indicating good demand.

Based on these factors, an estimated maximum purchase price could be in the range of 120 to 150 euros, considering that the condition is good and that the price history shows similar coins have reached hammer prices in that range. However, since the market can be volatile, it is advisable not to exceed this range unless there is strong competition in the auction.