I would like to let you know that he is reliable and legit supplier. We never receive any negative feedback from our existing customer who are purchasing from them on daily basis without facing any inconvenience. If you have any worries I suggest doing two things:
1. Phoning them up to discuss your concerns as they may be able to help you in answering these concerns for you over the phone.
2. Purchasing a smaller order to begin with to gain some trust of how they operate and do business (this way you are obviously risking alot less if you are worried)