ucoz activate its e-shop Beta module, you can now install it by going to cp report bugs, errors, mistakes, misprints etc. that you will see in e-shop module in this thread
http://forum.ucoz.com/forum/40-8138-1
Added (2009-10-02, 6:03 Am)
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you will need invitation in order to install the e-shop
here are 3invides http://ucozers.ucoz.com/forum/6-294-1