One of the perks to using Questrade's online brokerage is that there is never any charge to buy ETF's! Selling ETFs will incur a minimum fee of $4.95 (plus ECN fees which are usually only pennies per trade). For most CDN to USD currency Gambits (in and around $5000 USD), it will cost you just over $5 USD including ECN fees. At the end of the day, it all depends on the quantity of ETFs sold. That being said, the commissions will always be capped at $9.95, even if you are exchanging 6 figures or more. The ECN fee's on a six-figure sell transaction (as an example using $100,000) will run you at about $25-$30USD, however, this far outweighs the several thousand you will end up saving.