Until Recently, Enya Did All of Her Banking at the Bank

Until recently, Enya did all of her banking at the Bank of the Prairies (BOP).She transferred her business to a different bank when she discovered that BOP had been systematically overcharging for a number of services.Enya was, for instance, charged excessive amounts every time that she wrote a cheque or withdrew money at an ATM.She knows that friends and relatives were similarly overcharged when, for example, they paid bills by telephone or received payment by way of direct deposit.Enya suspects that she personally was overcharged about $750.While that represents a substantial amount for her, she also realizes that litigation against BOP might involve a great deal of time and expense.She consequently wonders if her case might be a suitable candidate for a class action.She would like to participate in a class action alongside all (or many) of the other people who have been overcharged by BOP.What requirements must be satisfied before a court will grant certification to a class action?