Buyers and sellers of second user Macs should achieve a clearer idea of the value of their machines using new international service, Mac2Sell.

The online service aims to offer users an accurate estimate of the true secondhand value of their Macs. It offers accurate estimates of Mac prices for 23 countries, including the UK and US, and the website operates in nine langauges.

Users simply need to input the make, processor speed, memory, hard drive and screen size of any Mac, and the site will generate a guide price. The service has been developed by French language Mac website, MacPlus.

"We wish to provide every web surfer in many countries, a free and easy-to-use service so that they can evaluate the price of a used Mac," said Cédric Mériau, president of "The used Mac market is very healthy and the creation of such a price reference may contribute to its expansion."