The MultiReader 3664 runs a Linux-based reading app on an AllWinner E200 CPU with 4GB of storage, a microSD card slot and a 6" Pearl E-ink screen (800x600 screen resolution). eBook support includes Epub, FB2, Mobi, PDF, PDB, and this ereader can also display HTML, DOC, TXT, and RTF files.
This ereader lacks a touchscreen and Wifi, but it is equipped with a g-sensor which detects orientation and can rotate the screen contents. It weighs in at 162 grams, making it one of the lighter 6" ereaders on the market.
It's expected to retail for 2700 rubles, or about $83 USD. That will make it one of the cheaper ereaders in that market, but not the cheapest nor the lightest. There are other budget devices available in Russia, including one with a 4.3" screen and a price tag of 2499 rubles.