hi do you have Bulgarian giant in big quantities

Hi Hossein,
It sounds as if you are asking at the wrong address perhaps?
This is a website open to all gardeners, mainly for hobby gardeners - to share information, tips, pictures etc, and answer problem questions. You cannot order directly from here, but try clicking on the tab "Garden Shops", top right of this page. The suppliers listed there might be more helpful.

Good luck with your leeks.