The system was to receive 25 pencils each month. Each box contains 25 pencils. The whole set from 1 to 20. I took off the plastic to check if there are 500 colors. They are all there. I have also taken pictures. They are brand new and unused. I have kept it in a dark place since I received it, but it has been so long that the plastic was torn when I opened the package. Please note that we also list our items on multiple websites, so they may be out of stock depending on timing.