Wow! ZZF has gone straight to hell! I never did business with them myself, because every time they had one of their "free shipping" sales, they would always jack the prices up to compensate, negating the savings. Very shady on their part. Because of this and other similar practices, they were never price competitive for me. I have my issues with other retailers, but at least you can get a sense of whether you're actually saving any money.
The one thing I can recommend from what I've heard is that some of the less well-known e-tailers like Ewiz, do a much better job of shipping OEM (bare) hard drives than Amazon, NewEgg, and the like. That's one of the great failings of the big boys, their shoddy packing of delicate equipment. Normally, I only buy retail packaged hard drives for this reason, but if I can find an e-tailer who knows how to ship OEM drives the right way, I'll give them my business, even if it costs a little more.