[Samsung Galaxy S7 Edge Accessories] cheesecactus:
I should clarify that neither of the ebay cases were advertised as spigen cases at all, and the clear one in particular is just really a generic case. But the 'New bumper hybrid' was definitely made to look like the spigen neo hybrid. Also note all prices are in AUD. And they're for a Galaxy S7 edge. I apologise for the quality of the photos of the s7 edge as they were taken with my old phone (Nokia Lumia 1320). I tried to include lots of photos (click the imgur links), let me know if i missed anything.

Ultra Slim Clear Transparent Gel Case ($1.93) vs Liquid Crystal ($15)

Photo Album: http://imgur.com/a/zdYzc

[IMG="clear cases s7 edge"]http://i.imgur.com/RqUwyQD.jpg[/IMG]

Design-wise they look the same, spigen one is made of slightly thicker material. If you want the thinnest case available, the $2 one is probably it. They both have the same dotted pattern on the back. The spigen is more shiny whereas the $2 one is a bit dull looking. The spigen one has a bit of a lip so the screen wont touch the table if placed face down. The $2 one has maybe half a millimeter of a 'lip'. Essentially nothing. Most importantly the spigen case has more structure and rigidity. The sides fit snugly and securely around the phone. The $2 ebay one...not so much. While it does fit and genuinely isnt that bad (for $2, quite acceptable), the sides just dont hold on to the phone that well. If you hold the phone by the edges, the weight of the phone pulls the case off a bit (not enough to pull any of the corners off though). Here are photos showing the problem: http://imgur.com/a/lHCZG The spigen one is rock solid. One other thing to note is there is a small line around the edge of the $2 one and its definitely noticable when holding (feels a bit rough). The spigen is pretty smooth all round with the exception of the bottom rear near the ports. That one straight line is a bit 'sharp' for lack of a better word. But fortunately you dont feel it with the 'pinky grip' (placing your pinky under the phone to support it). The $2 by contrast is actually very smooth underneath (which is always nice for resting your pinky).

Buttons: Buttons feel good on both, maybe a little bit better on the spiegen, however not really a noticeable difference. Looking at the buttons, they both seem to be molded similarly.

Conclusion: I wouldn't really recommend either of the clear cases if you want protection. However for scratch and maybe some really minor drop protection, they're very nice cases. I'd say they're both priced about right for what you get.

New Bumper Hybrid Case ($8) vs Neo Hybrid ($30)

Photo Album: http://imgur.com/a/q8uwa

[IMG="Knockoff vs spigen neo hybrid"]http://i.imgur.com/nShn43T.jpg[/IMG]

They look very similar thats for sure. The kockoff was advertised as black but the bumper is more of a bluish-grey in reality. Not as nice as the gunmetal neo hybrid though. The knockoff is clearly plastic around the edge, while the neo hybrid has the illusion of metal (but it is plastic). Another difference is the knockoffs back is flat, whereas the spigen is curved at the edges. Spigen is also much more rigid overall. The material just looks much better on the spigen. The TPU on the edges of the knockoff look 'spotty' (not a bad thing necessarily) but the spigen looks nice, smooth and soft.

Both of them do separate (the plastic outer and tpu inner) but i havent taken them apart as I've heard many spigen neo hybrids don't quite fit together properly, plus i don't know what the hell will happen to the knockoff if i try.

One issue with the spigen is the usb cutout has rather sharp edges, and thats where my pinky would go when i hold the phone. The knockoff is smoother rounded plastic and feels better on my pinky.

Buttons: Spigen is definitely better. Not to say the knockoff is bad, but it feels a little mushy in comparison. I actually got the knockoff first and thought the buttons were quite decent before i got the spigen. I still think they're fine though. Nothing dealbreaking.

Conclusion for these two is, the $8 knockoff is surprisingly good. Looks less premium for sure, but it is only $8 after all. Still happy with my purchase. The Spigen neo hybrid on the other hand...... $30 is too much for what it is. And thats discounted from its RRP of $40. It's a nice case, but that sharp bottom edge is not something that you should find on a $30 premium case. Wait for sales on this one.