Hey there.
There is no english version of taobao. For that reason alone I would not sink multiple 100 EUR into anything there. Trust is earned, not granted for nothing. Is there buyer protection? Lots of things can and will go wrong in transit of such a fragile good. Maybe damage due to sub-par packaging, ESD damage, physical damage (capacitors came off), fraud (wrong or sold damaged cpu knowingly), you imagine it. Make sure you can return it. And get your money back, and that this does not rely on seller willingness but third party. Some things in China are just a scam, like everywhere else I suppose. But you can't easily find and sue the counterparty in big China to be made good. Those 1000 EUR will then have to be written off. Just a cautionary note from my own dealings with China.
Now Taobao is a company owned by Alibaba. And what is Alibaba? Another fraud, listed in US stock exchange, big, therefore listed in major indexes, funds then have to buy it, and where does that investor money go? Into "investments" Alibaba makes to buy worthless chinese shell companies. Who owns those? Communist Party of China personnel. Difficult to swallow, but it is what it is, a CPC enrichment show. Read
Deep Throat: The BABA Investor Call.......Trade War?...What Trade War? for an introduction. Another free advice from me here (you know what they are worth ;-), if you are not Apple with its contacts, money, and negotiating leverage, don't invest in China.