Before my mom passed away, she did about the same for each of us for Birthdays and Christmas. I don't think she ever gave cash, unless she really couldn't find anything that DH wanted or the store was sold out and the money could be used for that item later. She would usually take me to get something DH had asked for and sometimes she and I would even go in together on a larger gift. She always knew exactly what to get me and might spend more on me than DH, but it was never really noticable.
There would usually be a special gift at Christmas to me from her, but that was a mother/daughter thing.
My MIL and SFIL have never given me a birthday gift until this year and it was a figurine from a collection I love. They have never given either of us anything for Christmas other than maybe a card and I don't think we get one every year. MIL always says there is a gift in the mail to each of every years, but in all these years, this is the first I have actually received something and DH brought it back with him when he was in California, I guess she sent such great gifts the mailman decided to keep them
My FIL and SMIL haven't given either of us a birthday gift since we have been together, but they always send us a joint gift card each year and it is usually a different place each year. DH birthday was yesterday and his dad told him that there was a gift for each of us in the mail (my birthday was in June).
My mom always gave us an Anniversary gift, she didn't have to, but she did anyway. My mom was always very generous with both of us.
DH has never been the gift buyer when it comes to me, so mom would take him to pick out something for me, since she knew me so well, and she would even pay for it.