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 quite good shape. This generally translates to a higher price compared to coins with lower conditions.

2. Current Listing Price and Previous Prices: The current listing price is 600 euros. In the past, we have seen auction prices that varied significantly, but there are examples of similar coins that have sold for significantly higher prices, especially those with a condition rating of 90 or above.

3. Previous Auction Prices: Looking at previous auction prices, there are examples of coins with similar conditions that have sold for prices ranging from 100 to over 1000 euros, depending on the condition and demand at the time of the auction.

4. Sales Trends: The coin has been auctioned 39 times, of which 30 have been successful sales. This suggests that there is consistent interest in this coin, which may increase its value.

5. Average Auction Price: The average auction price for similar coins is 229.86 euros, indicating that the current listing price of 600 euros is quite high compared to the average, but it may be justified by the condition and demand.

Taking all these factors into account, an estimated maximum purchase price could be in the range of 800 to 1000 euros. This range considers the good condition of the coin, the historical interest in it, and the potential for the auction price to exceed the current listing price. However, the final price will depend on the competition in the auction and the willingness of other bidders to pay.

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

1. Current 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. Starting Price and Average Hammer Price: The starting price is 100 euros, and the average hammer price in previous auctions is 113.46 euros. This suggests that, on average, similar coins have reached prices above the starting price.

3. Sales History: The coin has been auctioned 118 times, of which it has sold 103 times. This indicates good demand and a history of successful sales.

4. Previous Prices: Looking at previous hammer prices for coins with a similar condition (80), we can see that they have reached hammer prices that vary, but some have exceeded 150 euros in recent auctions.

5. Recent Trends: In the most recent auctions, hammer prices for coins of similar condition have ranged from 110 to 140 euros, suggesting that interest and value for these coins are on the rise.

Based on these factors, an estimated maximum purchase price for this coin could be between 140 and 160 euros, considering that the condition is good and there is a history of hammer prices that supports this estimate.

Therefore, a reasonable maximum purchase price could be 150 euros.

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

1. Current Condition: The coin has a condition of 75 (MBC), which indicates that it is in fairly good shape, but not of the highest quality (FDC).

2. Auction History:
- The average starting price of similar coins is 276.3 euros, and the average hammer price is 431.6 euros.
- In the past, coins with the same condition (75) have been auctioned at prices that varied significantly, from 32 euros to 1750 euros. However, the most relevant prices are those that are close to the current condition.

3. Previous Hammer Prices:
- In previous auctions, coins with a condition of 75 have reached hammer prices of up to 1750 euros, but there are also examples of lower hammer prices, such as 210 euros and 180 euros.

4. Current Starting Price: The starting price is 60 euros, which is relatively low compared to the average starting price of 276.3 euros.

5. Recent Trends: In the most recent auction, a coin with a condition of 30 sold for 180 euros, suggesting that there is interest in quality coins, even though the condition is lower.

### Estimation of Maximum Purchase Price
Given that the condition of the coin is 75 and considering the history of hammer prices, a reasonable maximum purchase price could be in the range of 300 to 500 euros. This is based on the average hammer price and the fact that the coin has a low starting price, which could attract more bidders.

Therefore, an estimated maximum purchase price could be approximately 450 euros. This allows for a margin for competition in the auction, given the potential interest in coins of good condition.

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

1. Current Condition: The coin has a condition rating of 30 (BC+). This is relatively low compared to other coins that have been auctioned, which may affect its value.

2. Auction History:
- The average hammer price for similar coins is 31.43 euros.
- In previous auctions, hammer prices have varied, with some reaching up to 50 euros, but there are also examples of lower hammer prices, such as 15 euros.

3. Starting Price: The starting price is 25 euros, indicating that the seller expects a minimum of 25 euros, but this does not guarantee that it will sell at that price.

4. Sales Trends: Out of the 14 times it has been auctioned, it has sold on 10 occasions, suggesting there is moderate interest in this coin.

5. Comparison with Previous Prices:
- In recent auctions, the hammer price has ranged between 15 and 50 euros, depending on the condition and other factors.

Given that the condition of this coin is 30 (BC+), which is below the average of coins that have sold in the past, and considering the average hammer price, an estimated maximum purchase price could be set in a more conservative range.

Estimated Maximum Purchase Price:
Taking all these factors into account, a reasonable maximum purchase price could be between 25 to 30 euros. This is based on the starting price and the history of hammer prices, adjusted for the current condition of the coin.