Sorry. That was hardly an advertisement anyway.
One site people may not know about (which I look at but haven't tried) is www.aquabid.com -- an aquarium auction site. Lots of accessories there too.
Folks sell fish there too, but shipping costs for that seem prohibitive, and silly to incur unless you know you are getting something healthy.
But for plants could be reasonable. More there than on Ebay, and my guess is you may get more folks like those in this forum ... people who know what they are doing given it is a fish-dedicated auction site.
Again, I've never used it.
On this, I'm not advertising for anyone!