Ever consider doing it yourself? I am an Arts Facilitator and I help people and groups to create their own pictures, with significance and meaning for them.
You dont need someone like me-!
E.G. My daughter was kitting out her place and bought a large white canvas and paint and did her own match/mix /contrast colour abstract. She and her husband did it together- as she said, with a bottle of wine!! Both used their hands- and had a theme etc-- and have it hanging in their lounge over their couch- far better than anything you might buy!! and cheap and fun to create.
OR call into the College of Art - or any art group in your locality and look at what anybody (someone - student, maybe--unknown) might have for sale.