I can not see any buy button to select  I don't know why   

https://phoenix-fire-7675.myshopify.com/products/3d-magnet-cat-eyes-gel-pen-nail-polish-06557?utm_medium=product-links&utm_content=android

Hi guys I to am new to shopify im useing zendrop I have had 2 sales that come to $95.20 now I have all my products set at a 45 % profit margin but when I go to zendrop it says my profit margin is -$31 so I don't understand how I can have profit margi...

Hi guys I to am new to shopify im useing zendrop I have had 2 sales that come to $95.20 now I have all my products set at a 45 % profit margin but when I go to zendrop it says my profit margin is -$31 so I don't understand how I can have profit margi...