Ekhanei.com: The trusted choice for safe buying and selling in Bangladesh. Cellbazaar is probably the safest and most convenient choice for selling and buying all across Bangladesh. Cellbazaar launched in 2006 as an innovative SMS service and its ecommerce website has been in operation since 2007. The service allows anyone in Bangladesh to buy and sell in his or her region conveniently in a very simple manner without registration and complicated procedures. It is completely free to post an ad on Cellbazaar.