Based on the data provided, we can observe that the coin in question has had an average auction closing price of 33.52 euros in previous auctions. Additionally, the current condition of the coin is 80 (VF+).

Considering that the condition of the coin is quite good and that the average auction closing price in previous auctions has been 33.52 euros, we could estimate a maximum purchase price around that value or slightly higher, taking into account that the coin has been sold in the past for higher prices.

Therefore, an estimated maximum purchase price for this coin in the next auction could be around 35-40 euros, considering its condition and the history of previous auction closing prices.