Is this a hidden plan? The cheapest unlimited plan I see right now on their website is 54€/month, which is the advanced business plan for 3 users. Even if I take the annual plan and divide the price by 12 it's 45€/month. Also these prices don't include VAT, while the personal plans do. Perhaps you were unaware that the business plans can't be bought for a single user?
I stand corrected, I was not aware there is a 3-license minimum.
Neither the pricing page nor the plan comparison page make this clear. You have to click into the business section to actually see that. Super annoying.