Yes, basically I use Amazon for toner and drums as well as some office supplies and this may completely change in the next few weeks.*
Additionally, I use Staples online and have them ship to my Staples home town store where I pick up the products with no shipping. I'm trying out a new company this week for toner and drums (paper when I need some) and they called me the other day. Rusty at SourceRite* firstname.lastname@example.org and they are a "Disabled Veteran Owned Small Business" which matters to me.
Their paper prices are the best that I've seen so far and their toner and drum prices are a littler higher than Amazon and I'm sick of Amazon's vendors messed up products when it comes to toner and drums. I've burned through 4-5 lately that I just had to throw away that were defective and I've not slowed down long enough to send a second complaint. Plus I lost two appointments due to this = $270.00.
I hope that this helps and I'm a full time notary signing agent and I use a lot of these three products.