Instruction: Evaluate the answerability of a question by analyzing the related document, outputting yes if the document contains information addressing the question, and no otherwise.

Input:
Question: Why has the price gone from $80 to $135? Has it been greatly improved?
Document: The price of this light use to be around 80 dollars. If you search the internet you'll still find it at that price. Hope this helps anyone interested in this flash light. Or help the seller realize their price should go back to what they use to have it at.
UPDATE 26.08.2013A two week ago, this flashlight started blinking and went off. I thought that batteries died, so replaced with new ones. The flashlight emitted bad smell and quit working at all. And batteries were damn hot when I removed them (lithium batteries can EXPLODE if overheated). So, now I have piece of junk that costed me $80. The total work time haven't exceed 10 hours!I have some very old gen. 1 night vision from late 60s.
04 2014  Listed Price - $105.74
better than i expected can see 600 to 800 feet great for price thay want me to write six more words
This light was an add on for a gen 1 night scope. This creates a much brighter, longer and broade field of view. Well worth the price if you need an IR light.
If you are using NVG's and don't have a good IR Illuminator, this is the light. Good price point and it does an excellent job. Killed 2 hogs on the first night out using it to illuminate the target. Go getchya one
So, parts cost $30, but you're paying extra $50 just for brand name.2. User manual not from this model at all, it mentions different modes, strobes, etc, which aren't available with this model.Bottom line: A great tool, but a bit overpriced, you may find some performance for much lower price elsewhere.
The build quality is typical Streamlight, which is to say very nice. All the fit and finish is just what you expect. Took it and the imager out on a fairly dark night and wow. I can now see out around 250', and it's just like daylight (except for the green). I really didn't expect that level of performance, given the price of every other IR spotlight I've found.
Some time back, I purchased one of the inexpensive Gen I monocular night vision imagers. As with all the ones in the $200-300 price range, it's so-so. One thing I did notice is that if I turned on the small IR illuminator, it was much better, but the range was short. Ah ha! The search was on. Found this gem mentioned elsewhere and came straight to Amazon.
As I observe the seller move his price for this product up regularly (now $110) from the $86 I originally purchased it for back in February of this year (2013), I await response from them as to why this light stopped working after just 7 months. I used this no more than 12 to 15 times for a total of maybe 90 minutes.... Why did I pay nearly $100 for a FLASHLIGHT!! that happens to shine an infrared light. HM?
Answer: no