Some people wondered if (apart from the price) there is any difference between these two sources. Actually there is. If you buy from 409shop, you will get the UV-B5 in a nice box, like this:
If you buy from AliExpress, like I did, the radio is delivered in a light grey box with no information printed on it. If you don’t care about the looks of packaging, it saves you $8 per radio.
*edit* 409shop also puts a headset in the box. If you care, buy there.