Is there a printer with a tray that can hold 16X20 inch paper? -

If there is where can I find one and how much is the cost?

Yes there is... Here is a great 24 inch printer. http://www.kqzyfj.com/77104nmvsmu9DACEEE… Here is another one http://www.tkqlhce.com/o9105zw41w3JNMLRP…

Probable large Format printers and the cost would depend on which one you buy. This is a Canon link to them but other manufatures make them as well. http://www.canon.co.uk/for_work/products…