New York - The world's largest online retailer Amazon. com said Wednesday its earnings increased 30 per cent to 143 million dollars in the first quarter of the year on strong international sales boosted by the weak dollar.

Revenues rose 37 per cent to 4.13 billion dollars, the Seattle- based company said after markets closed.

About half of its sales came from outside the US market, with international sales rising 44 per cent.

Amazon chief executive Jeff Bezos attributed the demand to lower prices. (dpa)