Depending on the package, the delivery time is from 1 day for 100 submissions to 7 days for 2000 submissions. We are experienced with submissions but we never calculated the pecentage of approval. We will try to make it perfect and get an over 80% approval rate. It takes us 7 days because we are really submitting them manually by writing any word except description. Thanks. If you have more questions please do not hesitate to ask.