Excessive Gift from Co-worker

by Co-worker
(Nebraska)

I received a Christmas card with two $50 gift cards from the wife of a co-worker. The co-workers wife signed one gift card from the co-worker and the other card had both of their names.
It was a nice gesture but it is excessive. We are not friends and we have had a rocky work relationship for years.

Other co-workers received the same gift cards as well.

With the past relationship we have had, I do not feel comfortable accepting the cards. The co-worker is rude and hard to work with throughout the year.

I feel that I am being bought.

I would like to return the cards with a thank you card but I would like to state I am uncomfortable accepting the cards.

Is this rude? I do not want any confusion with our relationship. I do not respect the co-worker nor do I have a desire to become friends with him. As I mentioned, there have been years of turbulence. Not to mention, it was his wife that purchased the cards and sent the cards.

Thank you.