Resurecting this old thread - as my feedback may be relevant to others that are looking at those frames on Ali.
I bought one mid February, it was a total gamble, I did read all the bad reviews about Ali. Then I thought, there as to be as much bad reviews about eBay if you look for those, and if you're dumb enough to buy from a zero-feedback or a 60% positive seller, well Ali is not the issue.
So, Feb 17th, bought a CUBE aim SL frame from this guy fof $221 shipped. CUBE is a well known German brand by the way. So, paid for the item, and waited.... Then it shipped a week or so later.... and waited..... then tracking number became active.... and waited... and it finally reached me yesterday.
Real shipping time was actually 9 days from China using EMS/Canada Post, what took long was the processing of the order.
And the frame is awesome, top quality.... is it legit? Who knows.... I think it is, just looking at the tube shapes, soldering and all.... if it ain't, well it's a damn good knockoff job that is still worth $221 !!!
So in my case, it did work out pretty good (Seller: Probike)
I bought from a 100% rated seller though that had sold 3 of this same frame already.
Obviously if you buy a branded carbon frame for $150 you'll get screwed, DUH! As with every online shopping, you need to use a little common sense.