To estimate a maximum purchase price for the coin in question, let's consider the following factors:

1. Starting Price: 130 euros. This is the initial price set for the auction.
2. Condition: The coin has a condition rating of 85 (ebc-), indicating that it is in fairly good shape, although not the best possible condition.
3. Auction History: The coin has been auctioned once in the past but did not sell, which may indicate that interest in this coin is not very high or that the starting price is too high for potential buyers.
4. Average Hammer Price: There is no data on previous sales, making it more difficult to establish a reference price.

Since the coin did not sell in its first auction and considering its condition, an estimated maximum purchase price could be slightly below the starting price to attract potential buyers.

Therefore, an estimated maximum purchase price could be between 100 and 120 euros, depending on the interest of collectors and the market at the time of the auction.

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

1. Starting Price: 80 euros. This is the initial price set for the auction.
2. Condition: The coin has a condition rating of 80 (MBC+), indicating that it is in good condition. This generally increases its value compared to coins of lower condition.
3. Auction History: The coin has been auctioned 2 times in the past, of which it sold 1 time and did not sell 1 time. This suggests that there is interest in the coin, but also that there may be limitations in demand.
4. Previous Prices: In the previous auction, the coin was offered with a starting price of 30 euros and sold for the same price. This indicates that the market has valued this coin in a lower range in the past.

Given that the current starting price is 80 euros and considering the condition and auction history, an estimated maximum purchase price could be in a range between the starting price and the average hammer price of previous auctions.

Taking all these factors into account, an estimated maximum purchase price could be approximately 70-90 euros. This allows for some margin for competition in the auction, but also considers the price history and the condition of the coin.