Based on the data provided, we can observe that the coin has had an average auction price of 92.78 euros in the past. Additionally, the condition of the coin on this occasion is 70 (MBC-).

Considering that the condition of the coin is relatively good and that the historical average auction price has been 92.78 euros, we could estimate a maximum purchase price around 100-110 euros for this particular auction.

It is important to note that the final price may vary depending on factors such as demand at the auction and the competition from other bidders interested in the coin.