Just in case you didn't know
The reason for posting is that I don't think the website is that clear to new users. Sure when you have been on here a while, or have bought your own top up for PAYG it is obvious, not so clear when you are new.
The focus is very much on buying the expiring goodybags, which are better value, but not what low / managed usage people would want.
giffgaff could make it a lot clearer that when you buy a top up you are on PAYG, and you can then use that balance to buy a goodybag if you wish. I have also discovered that I need to turn off my auto renewal to be able to use the credit balance on my account to buy future goodybags.
New user, two sims, one on goodybag, one on PAYG