Based on the data provided, we can observe that the coin in question has had an average auction closing price of 27.91 euros in previous auctions. Additionally, the condition of the coin on this occasion is 80 (VF+).

Considering that the condition is good but not excellent, and taking into account the history of previous auction closing prices, as well as the starting price and the average auction closing price, we could estimate a maximum purchase price of around 35-40 euros for this coin in the next auction. It is important to note that the final price may vary depending on the demand at the auction and other factors that may influence the bidding.