You might be wondering how your Credit Value is worked out - well it's quite simple and is based upon two factors:
Domain Rank (according to ahrefs)
Traffic (according to ahrefs)
The higher each of these numbers is, the higher your credit value will be.
The credit value is a set amount for your domain when you are buying or selling backlinks BUT you do have the option to change the value when it comes to Guest Posting.
If you want to change the amount of credits you charge for a guest post simply head to the Settings area within your domain management tab and move the slider to the desired amount. Note - the slider range will be based on a set range (100% - 200%) from your base credit value.
For example: say my credit value is 50, I will be able to set a price for guest posts anywhere from 50 credits up to 100 credits.
This video shows the explains the credit value in 3Way Social: