I bought a set of X20 callaways on Ebay and yes they are fake.
The seller had great reviews but after one round, the shaft in the 3 iron splintered (its graphite). Sent to callaway for repair and they confirmed its a fake. you have NO recourse.
Be aware when buying clubs on ebay. The chinese website - hygolf.cn is where they are coming from I suspect. The pictures are the same.
Very annoyed buyer.