Where can I buy cheap chia seeds yet effective?

I am not sure where you are based, but if you are in India, then you can easily get these online. There are a host of brands that sell chia seeds at very reasonable rates. The brands you can look at are Healthy Buddha, Pure and Sure, Shree Chakra Farms Organic, Organic White and even Nature. These are available online and may also ship overseas. Try on websites or get from someone who may be traveling to India, if you are based somewhere else.