My younger sister is a photographer. She gave "mates rates" on a couple of occasions to my ILs, once for a Christening and once some portraits of SIL's children. Very kind of her.
I fell out with MIL over a year ago. Life is better without her and I have no wish to rekindle a relationship.
OSIL's eldest is getting married. MIL and SIL are moaning on facebook about photographers, asking for recommendations and then exclaiming they are too expensive.
I just KNOW that if we were speaking that they would ask if my sister would do it, or I, with permission from sis, would have offered.
But no. I'm just sitting here smugly. They can afford it, they just don't want to, probably because they remember the cheap rates...