StockBullz.com

I recall hearing somewhere that the commission fees associated with trading warrants can vary widely from one discount brokerage to another.

I can't find a distinct commission fee schedule for warrants at BMO InvestorLine but by just trying some fake orders, it looks as though their fees are the same as for stocks.
Any InvestorLine customers out there with warrant trading experience that can confirm this?

Also, what are the fees associated with warrants at other discount brokers?

Thanks!