Buy 3 Get 1 FREE Hair Growth Line

[{"id":50317433274582,"title":"Default Title","option1":"Default Title","option2":null,"option3":null,"sku":null,"requires_shipping":true,"taxable":true,"featured_image":null,"available":true,"name":"Buy 3 Get 1 FREE Hair Growth Line","public_title":null,"options":["Default Title"],"price":26700,"weight":0,"compare_at_price":35600,"inventory_management":null,"barcode":null,"requires_selling_plan":false,"selling_plan_allocations":[],"quantity_rule":{"min":1,"max":null,"increment":1}}]