It is not true. The cost to build the Sheppard subway kept increasing. At that time, the government had no money so they cut out one station and cut out a lot of other things in order to finish the subway within the budget.
"莱斯利街(Leslie St.)至湖滨停车场的一条街车轨道连接工程,2009年预估造价为1400万元,但在出现一系列变动后,现在已上升至1亿500万元。 This is what will happen for the new subway. 30% is only a joke.