To buy groom’s parents ty gift or not to buy?

If his parents did not contribute at all financially, you don't need to give them anything. If you really want to give them something, just give them copies of the photos from the wedding. I know with my parents we gave them their gifts a couple days after our honeymoon, so that his parent's wouldn't know about them.

Parent gifts are never required and are part of the pressure to spend more money. I would skip them in this case.

Parent gifts are to thank them for their love and support while growing up and during your lives in general, they are not related to contributions to the wedding. They don't have to be expensive. A nice picture frame or gift card to their favorite restaurant are fine. If you feel like you want to give extra to one set of parents because of their contributions just give those gifts in private. Don't make the other parents feel like second class citizens just because they didn't or couldn't contribute to an optional party.

I agree with everyone else that it's fine not to get them gifts but also to give your parents' gifts to them privately. There's no reason to make that a public presentation.

But I also wanted to say, from one woman who married a man to another, don't fall into the trap of doing all of the emotional labor in your marriage. He can gift or not gift his parents and other family members as he chooses; you take care of your family members. You are not required to do all of the gifting work (on future holidays/gifting occasions) just because you are a woman.

My husband and I are giving photo albums of our wedding to our parents as thanks.