Only ones I can think of is Interactive Brokers Canada. Probably best bet. Questrade can get down to a penny a share or 4.95 flat if you subscribe to their advance data packages. Their like 80$ a month but their reimbursed if you generate enough commissions. It’s quite high though so IB still leading there. And think I noticed Disnat Direct(desjardin) can get down to 1.00 flat I believe I’d you meet a certain theshhold of monthly or maybe it was quarterly trades. Believe it was 1.00$ flat I saw on their page. Have to dig around a bit.