Have you made a mistake in the price with Fr. 71.90? Unbelievable surcharge within a short time and only for this dimension! What's going on? I bought this tyre this year for Fr. 41.70 from you. Others sell it for half the price - that's pure rip-off. Do you really need this? No one needs to tell me that there are supply bottlenecks - I did some research with the manufacturer.