I went over to their site you are right it is a 15 flat rate. But still 50+ plants you could be considered a bulk customer which would receive special treatment a bonus plant is a cheap way to keeping a good customer happy and returning every year.
Maybe I am a bad business woman. I have rental property and I give my tenants Christmas rent free if they are good payers and do not destroy the houses. If they rent close to Christmas and have not had time to develop a rating in my opinion I give them a 50.00 gift card for Christmas. It is just me but I think people/your customer should be treated well in return you get more rather than less. When I have an opening I have people ringing my phone off wanting to rent one of my houses.
