Question:
How much credit does each SMS actually costs? My messages did not exceed the 153 character allotment. So I was assuming that it will only cost 1 credit but my SMS messages shows that I spent 2 credits each.
Answer:
Please note that using a Sender ID costs more than regular SMS with sender ID.
Also, you can see the credit calculation here: SMS Marketing → Buy SMS Credit
It will show the credit calculation based on the country rate.