Try a Bed Bath & Beyond, or Marshalls, if you have them in your area.
Our BBB has several four footed boards and more than one Rowenta ironing board model.
My favorite board is a Rowenta, four separate feet instead of a T-bar for front and back legs. It doesn't wobble.
Bad part: I did have to save up for a few months to pay the price. They aren't inexpensive.
Aardie.