These levers look great and definitely enhance the feel as you can dial them in for hand size etc. They certainly appear to be well made and look the part. I like the shorty ones in particular.
However, and it's really important you purchase these with full knowledge. You largely get what you pay for and there is a good reason why companies like Pazzo, CRG and Rizoma and even OEM charge premium prices for their kit which is way more than the stuff found on eBay for $25. In a nutshell, materials, workmanship and testing. Aesthetics aside, they are subjected to rigorous testing to destruction. The ones made in China are not.
These cheap levers CNC milled, billet or other words used to describe them are effectively made of cheese and in a crash will snap off anywhere they like, often right at pivot point leaving you nothing at all to get you home. This is despite having notched sections supposedly to weaken the lever at desired break-off points meaning you should only lose the end of the lever.
I bought a set of these as did many of my friends and the eBay retailer was local so I went to see them. Turns out it was someone I knew as well which was a bonus so I got a bit of a discount. He also told me he buys them in China for something like $3 each and has kits to make them fit any bike. Immensely popular on eBay and an appealing market for those wishing to personalise their bike.
On the plus side if you do break one you can replace them for $25 rather than $200.00. This is great on the track but on the road this may also mean you have to ride home without your clutch or possibly your front brake which is harder than it sounds. I know this from personal experience when my wife dropped her bike and lost the front brake entirely when it snapped off. We were close to home so I rode it back for her, and walked back to bring her back on my bike. This would have been a recovery if we'd been far from home where it didn't need to be. Her bike was perfectly rideable after a low-speed tumble except the brake lever snapped off at the pivot.
I've seen this a few times with friends bikes. A good quality lever will usually bend, or snap at a pre-determined spot and usually leave you with something to get home with.
Doesn't mean you shouldn't buy them, but do so with eyes wide open, carry spares if a long way from home etc etc.
I'm not knocking these levers, I understand the market and I hope this post is helpful to potential buyers. I won't be buying the cheap stuff again. I would like to get some trick levers though so I'll save up for some good ones