Actually only 200 admissions per day are available for overseas visitors. Also the museum itself doesn't sell the ticket so u need to buy it from the agency or 'Lawson' (the combini) all over Japan and ask for "jiburi bijutsukan ticket"
In fact it's not the ticket but the voucher then u need to present this voucher to the museum once u arrived.
Adults/college Students (from 19yrs) Y1,000
High School/Junior High School Students (13-18yrs) Y700
Elementary School Students (7-12yrs) Y400
Children from (4-6yrs) Y100
Children under 4yrs free of charge
*** The admission fee includes a screening of the short film in the Saturn Theater.
~*~* Nakitai yo todokanai omoi wo kono sora ni *~*~