I think ACE ROYAL brand is the most economical paint for interiors. It costs around $22/gal. Not only that it is cheap, it also scores well in Ease of Use, Performance, and Appearance. It can add styles to any room, plus, it can be tinted in any 1400 colors Colors for Your Life palette. You can refer to readyfit.com.au for some styles and designs that may help on your DIY interior painting.

Have a great day!

Any good brand name interior latex, like Behr, Sherwin Williams or Pittsburgh Paints. In fact, Sherwin Williams has a sale this week of 30% off (they sent me an announcement in email). Good paint is the best value because it will cover in one coat. Pay a little more for quality brushes and rollers too -- you will save in the long run by getting a better coverage.

Use Emulsion Paint for interior walls. It comes in a variety of colours.

emulsion a water based paint you can get in a variety of finishes look into this as it does affect the look