Based on the data provided, we can observe that the coin in question has had an average auction closing price of 92.18 euros in previous auctions. Additionally, its condition is estimated at 80 (VF+), indicating that it is in fairly good condition.

When analyzing the previous prices of this coin in past auctions, we see that it has reached closing values of up to 280 euros in the past. However, the starting price this time is 20 euros, which is significantly lower.

Taking all these factors into consideration, and considering that the coin is in a condition of 80 (VF+), we could estimate a maximum purchase price around 150-180 euros. This estimation is based on the fact that the average closing price has been 92.18 euros, but taking into account the condition and the higher previous prices reached in past auctions.

It is important to note that the final auction price will depend on the demand at that specific moment, so it is advisable to keep an eye on its evolution.