Plan to visit Dubai for 30 days visit from India with my wife

by H.P.Prasad
(Coimbatore, Tamilnadu, India)

We live in India. I am H.P.Prasad ( age 66 yrs) and my wife is Dharma Prasad ( age 59 yrs).
We plan to visit our son and his family staying in Dubai and then travel to England to visit our daughter and family staying there.
How is much is the Visa fees per person for 30 days and also for 60 days?