There are many differences between custom picture frames and ready-made ones with the main  one being the the price. Custom picture frames  are made one  at a time, normally with real, timber wood, not MDF,  and better-quality materials, to exactly suit and fit customer's artwork. Importantly the labour, the the materials and the processes are more expensive and thus, the costs and prices will be higher.  Ready-made picture frames or off-the-shelf frames, on the other hand, are produced in mass, almost invariably with cheaper, common-quality materials, to approximately suit most common or popular  picture framing  sizes. With custom picture framing,  the picture framer carefully selects the components ...