I go to a class/club for young children. I pay termly for my two smallest children and it's £6 for one child and an additional £3 for the second child due to sibling discount so £9 per week altogether. I have been going for years.
I have just seen on Facebook they are offering a black Friday promotion of £10 for the next three weeks classes (to end of term) for new members.
Aibu to think that's really unfair on those of us who have paid in advance?