Based on the provided data, we can observe that the coin in question has had an average starting price of 90.88 euros in previous auctions, with an average closing price of 134.27 euros. The condition of the coin this time is described as 70 (VF-).

Taking into account the coin's previous auction prices and its current condition, we can estimate a maximum purchase price. Given that the average closing price has been 134.27 euros and the current condition is 70 (VF-), we could consider an estimated maximum purchase price around 140-150 euros.

It is important to note that the final auction price may vary depending on factors such as demand at that specific time, competition from other bidders, and the perceived value of the coin in that particular auction.