Information about tuition fees, payments and terms of enrolment can be found here.
Yes, it is possible to pay the tuition fee in instalments. More information about tuition fees, payments and terms of enrolment can be found here.
AKV|St.Joost does not offer grants or financial aid, but there are various organizations in the Netherlands that offer individual scholarships. On the Avans University of Applied Sciences website you can find a list of specific scholarships.