These aren't faked and usually can be had for around $100
Watch looks good from the photos, but a close up dial photo is needed to vet it, but as it is, the non-printed Omega logo is a huge plus
If you haven't seen one up close, it's super tiny, the lug width on the watch you shared is 1cm - so the diameter is around 2cm's
The 620 movement has an enormous amount of spares, spare movements, so if something goes wrong, you can just buy another watch for cheap and replace whatever needs replacing
For some reason I used to buy rare ladies watches too back in the day, I only have one left, a black dial with only Omega logo on it, if you're shopping around I can send photos