Looks like the offer I got has finished. They're still cheap but just not as good a deal. E.g. The Children and family photography one is now $19
These are the ones I bought:
Wedding Photography Problems and Solutions $4.00
Children and Family Photography $6.00
Location, Posing, Execution $6.00
Btw I got one for $4.00 as a multibuy thing. FB had it as 10 courses for $19 which looks to be the case now.