According to some studies the best thing about Pinterest is it's higher conversion rate.. They says Possibilities of visitors from Pinterest turning to customers rate is high compared to other sites.... Well i don't know who conducted those studies !!!
It is not fixed, it depends on the number of followers and you have on your profile and the quality of posts you have made .... look it's like if you have made quality posts and there is less number of followers or you have followers that are fake like you have increased you followers by running some campaigns then i am sure the conversion isn't going to be good. But if you have a large number of followers and the posts are also great than conversion is
Pinterest has been useful for me so far. Effective usage is key factor in case of Pinterest. Don't use it just for bookmarking , , ,