Prices vary, see catalog .
Domestic institutions may submit an institutional purchase order. Individuals and foreign institutions must submit payment in US currency in the form of a check, money order, or bank draft drawn on a US bank, or MasterCard or Visa. Domestic institutions may submit an institutional purchase order. Individuals and foreign institutions must submit payment in US currency in the form of a check, money order, or bank draft drawn on a US bank, or MasterCard or Visa. Prices vary, see catalog .