Yukon is a different company from Firefield
These are all gen1 scopes. Here’s the difference among gens 1, 2, amd 3.
http://www.ar15.com/forums/t_6_18/329958_.html
Awesome site and thanks for sharing.
To sum it up, they have an image with a comparison:
http://general.blackice.com.au/pics/Quick%20Five%201280.jpg
Hey, great find. I posted that on deals.woot so it can be shared with the rest of the community.
^^ It looks to me like the item on Overstock is only 4x50, while the one here is 5x50. Maybe I’m reading it incorrectly or maybe one or the other website made a typo (does that ever happen?).
I do have to say that I find the difference between the Gen 1 available here and the Gen 3 to be alarming. It makes me wonder if my purchase here was so wise …
Apparently you’re right. The one on Overstock is model number FF24063 and the one woot is offering is model number FF18063.
That 4x versus 5x really makes a huge difference in prices around the net.
FireField FF18063 Nightfall Digital Night Vision 5x50 Monocular
Woot = $179.00 + $5 shipping
Lowest Price When Compared
Optics Planet = $229.99 + ships free
ebay = $299.99 + ships free
B&H = $249.99 + $9.70 (est) shipping
[urlhttp://www.bhphotovideo.com/c/product/766275-REG/Yukon_Advanced_Optics_FF18063_FF18063_Digital_Night_Vision.html
FireField SM18013 Sightmark Twilight 5x50 Digital Night Vision Monocular
Woot = $199.00 + $5 shipping
Lowest Price When Compared
Optics Planet =$329.99 + ships free
ebay = $329.99 ships free
B&H = $329.99 + $9.70 (est) shipping
Note
Above comparisons came from a random Google search and are only a small sample of results you may find on your own search. It is a good faith effort only, in an effort to give out average web pricing for comparison.
FireField YK24042B Spirit 4x50 Night Vision Monocular
Woot = $149.00 + $5 shipping
Optics Planet = $239.99 + ships free
ebay = $149.95 + ships free *Beats Woot by $4.05
http://www.ebay.com/itm/Yukon-24042B-Spirit-4x50-Monocular-Night-Vision-Scope-/360441751235?_trksid=p2047675.m1850&_trkparms=aid%3D222002%26algo%3DSIC.FIT%26ao%3D1%26asc%3D13534%26meid%3D3713004086277102766%26pid%3D100011%26prg%3D1080%26rk%3D1%26sd%3D400254106135%26
B&H = $239.99 + ships free
FireField FF18062 Nightfall Digital Night Vision 3.5x42 Monocular
Woot = $159.00 + $5 shipping. *** Best Price Found**
Optics Planet = $199.99 + ships free
ebay] = $201.99 + ships free
http://www.ebay.com/itm/Firefield-Digital-Nightfall-3-5x42-Night-Vision-Monocular-FF18062-/110935840218
B&H = $229.99 + $9.20 (est) shipping
FireField FF18062 Nightfall Digital Night Vision 3.5x42 Monocular
Woot = $159.00 + $5
shipping. *** Best Price Found**
Optics Planet = $199.99 + ships free
ebay = $201.99 ships free
http://www.ebay.com/itm/Firefield-Digital-Nightfall-3-5x42-Night-Vision-Monocular-FF18062-/110935840218
B&H = $229.99 + $9.20 (est) shipping
FireField YK24022WP Seawolf 3x42 Waterproof NV Monocular
Woot = $169.00 + $5 shipping.*Best Price Found
Optics Planet = $249.99 + ships free
ebay = $249.00 + ships free
http://www.ebay.com/itm/New-Sea-Wolf-3x42-Waterproof-Night-Vision-Monocular-/150953926298?pt=LH_DefaultDomain_0&hash=item23258e1e9a
B&H = $249.99 + $9.20 (est) shipping
http://www.bhphotovideo.com/c/product/425541-REG/Yukon_Advanced_Optics_YK24022WP_Sea_Wolf_NVMT_3x42mm.html
Note
Above comparisons came from a random Google search and are only a small sample of results you may find on your own search. It is a good faith effort only, in an effort to give out average web pricing for comparison.
ckeilah: Nice link, helped me keep my finger off the trigger… for now…
Glad to help. Maybe I lose a QP for that, though! 
Got mine the other day. Yes it is only generation 1 with its many limitations but for this kind of money Way Way Kool. Lighs up the woodline behind my house with no problems.