Unless a credit card company can prove to me that they've got MY back if a stolen credit card is used to buy my domains, I'm not having it. E-transfer works well enough, and more people have e-transfer than credit cards (i.e. younger generation).
I think Interac themselves cap it at $10K, if you talk to your business advisor at your bank, they can set it up to that $10K limit. That's what I've done. But it may depend on your bank, your history with them, etc...