Just finished very rough translation for eShop WordPress plugin. Almost 800 strings are now completed as good as possible at this very moment and frankly, vacation seemed to be only time this year for that kind of job.
eShop is a decent shopping cart plugin for WordPress. Its free, packed with various features like using WordPress pages for creating products, email templates, discount options, admin access to an order handling system etc. Setting up your own store will take you 15 minutes and handling it later is truly smooth.
Installing new translation is simple. Just download the Estonian translation file (eshop-et.mo), upload it to directory of eshop under WordPress plugins folder and check, whether your WordPress is configured to be used Estonian translation as default language. Everything should work after refresh.