Discount Acrylic Paint

I am interested in starting a new project on a canvas, from my drawings on paper looks so good.
So I wonder how a 51 inch x something or something would be compared to that.
And how much cheaper, but semi-good quality acrylic paints, would be at Hobby Lobby or Michaels would be.
Or if there is still an art shop at discount throughout the Denver / Denver Metro Area.

Thank you.

You can get very large canvas art from your local retail stores such as Hobby Lobby and Michaels or you can visit http://www.dickblick.com/ Namebrand and paintings for private label really cheap. They also have a wide variety of them too. I received a package of BASICS Acrylic (all primary and most BLK SAR) for about $ 13! I usually do my groceries from here if I can wait few days for my things to arrive.
If I remember, Michaels and Hobby Lobby Acrylic costs about $ 4 - $ 7 per tube if purchased without packaging.