Reply from EBay seller:
Dear monkeybizzness01,
This is NOT a hotcig model. The pic is not accurate and taken of a hotcig. But the look is exactly the same. The new models have just left the mfg to me today and are on the way. Once i receive i will update with the actual pics.
And yes, it is an authentic SX-350 chip. Not the fake sx-300 chip that hotcig uses. I used to sell the hotcig until they were caught lying about their chip. And delivery. I was then able to find this manufacturer with much better quality.
I would NOT list a fake or mislead in any way. Especially on eBay which is ALL pro-buyer. You can see I am a powerseller and 100% positive feedback. The last thing I would do is misrepresent an item.
Be assured, I know it sounds too good to be true, but this IS a real YiHi SX350 chip. And a steal at this price considering the units out there with a fake SX300 and the build quality of them. If you are unhappy with the unit in any way shape or form, we will gladly take it back for a full refund.
- crash944
Nice reply! looks like its down to your own judgement! The hotcig chips from what I could tell (as I have never seen a real Yihi board were not available to modders or the general public) were real, board analysis of components used and board design were all consistent with a design made by YiHi. Just to say not one DNA clone board has the same design as an evolv board all are reversed engineered and use other components and board design.
Authentic YiHi SX350 60W Chip!
It may possibly be YiHi have fire sold SX350s given the movement in the vaping market and are dumping stock I can't wait to see a real review of one which will most probably not happen (a real teardown, hires board pictures and verified firmware not to mention output voltages) I have been vaping SX350s boards (30W before any firmware updates) since March 2013 so i would know exactly if it was a real one.
Varitube are selllng SX350s for $70 plus the mod and thats a loss for us in the UK and USA its China anything is possible but so is the misinformation, trickery and its business after all (No racism I am 50% Chinese myself)
It amuses me sellers advertise vapegear with pictures & specs that are not of the actual vapegear they are selling

It's like selling a house online then when you get there the seller says it's this one!
Vaping from China is like the wild west you pay your money and roll the dice!
Just had a look at the listing, here in the UK you only buy from ebay if you have money to burn

or think you are lucky
UPDATE #2: DO NOT BE FOOLED BY OTHERS SELLING A SIMILAR ITEM. ASK THEM IF THERE'S IS MADE BY HOTCIG.
(The build is very good apart from the sleeve fitting and iffy soldering common with china) IF IT IS, IT IS NOT AN AUTHENTIC ORIGINAL CHIP BUT A POORLY MADE COPY (Believe who you want there
(Where are they made? NO description) OUR UNITS ARE NOT HOTCIG. THEY HAVE ORIGINAL AUTHENTIC YiHi CHIP. (Why if this is true have all SX350s been @ 60W for 6 months!)
The New Zero Sx 50W Mod: 50 watts of intelligent vaping power in the smart and sexy style of stainless steel with additional decorative sleeves available. G-Sensor for easy wattage adjustment without the need for extra buttons . Memory function and adjustable in 0.1W increments.
Features:
Made from 304 grade Stainless steel (frame) Phenolic material (inner housing) Sandblasted SS !!! (Did only the Yosen DNAs come with sandblasted sleeves?) have (removable sleeve)
Decorative Sleeves available separately (Where who makes them?!

)
Gravity sensor adjusts power automatically: 7.0-50.0W in 0.1W increments
Voltage output 3.7-11.0 volts (!!!!!!!!!! SX350 has buck and boost so 1-9.5V)
Atomizer resistance .3-3.5ohms (!!!!!!!! SX350 fires at .15)
Adjustable Spring Loaded 510 center pin made of copper (Copper will last a week if its not brass)
Pass-Though Capability (!!!!!!!! SX350 is not pass through!)
Screen size: 0.66" OLED
Uses 18650 batteries (Not Included)
Size: 82.5mm x 45mm x 25mm
More than 10 available / 16 sold
Thats a nice cash cow! Can't wait to see, no sample you are going of what some excellent english speaking chinese sales rep has told you

This one is even more interesting than waiting for the SX350J