what is the cheapest cost effective large format printer for doing posters?

Hi guys

I am new to the large format market. I am looking at purchasing a large format machine soon. These wil only be used to run A2 full colour posters on 100gm matt paper. These posters are for short term use and the quality can be of medium. I am just starting of and need to run atleast 400 posters a week. Is there a cheap large format machine that you guys can refer me to buying. Thank you very much

 

There is one large format laser printer option now - the KIP Color 80 print system
http://www.kipamerica.com/kc80.asp
http://www.kipamerica.com/pdf/Color 80.pdf

Odorless LED full color CMYK print system
High-resolution output is true 600 x 600 dpi
Dry Toner system produces lightfast, waterproof images
Advanced color management features
Automatic density controls ensure color consistency
2,000 + Square Feet per hour