What are the correct prices to a phone in Germany?
Vastauksen tähän kysymykseen jakoi lasselusse
according to this site https://elisa.fi/kauppa/#!/puheliittymat/prepaid prices would be this https://elisa.fi/attachment/content/Elisa_999_ulkomaanpuheluhinnasto_04_15_elisa_mobile.pdf . it tells price to be 0.61 €/min . (curse words...whadda is going on). finnish operators have been inventing new ways to increase prices in recent years. maybe this is one possible way to collect some cash from customers.
could you tell where you find that 6.6 cent/min information. if there is conflicting information then you may get some money back but requires calling to the customer service.
other price list is https://elisa.fi/puheliittymat/puhelut-ulkomaille/ . it's also expensive.
you may want to use 99599 for next time, however 99599 prefix may not work in prepaid plans. https://nettia.fi/en/
that eu's roaming regulation does not affect for calls into abroad, it means operators can charge whatever they want.