I just got off the phone with Macore, they sell those professional plant stakes pre printed with a pic and description like all the big companies use. 500 is the minimum order for $18, if they don't have the info of the plants you're selling then a research fee of $3.99 is applied. $15.00 handling fee for orders under $200. They can also put a barcode on them too. This price is for the Size 1. It comes out to .4˘ each.
http://www.macore.com/products/plant..._illustrations