AC Moore carries a black wood line by Timeless frames. A 22x28 complete with glass (the glass is very dirty stuff, I iusally replace with new washed/papered glass b/c I am lazy) for around 20usd each. They may need a few days notice as their level is probably only 4-6. Otherwise, as mentioned above, you can do the prefab metal or Nielson's 11-21 sectionals for a similar price.