The one of a kind cannot fully go up here as a different person can scan the same physical thing and also start selling (if it is not some physical art made by an artist that claims ownership), but that's not the point here.
To recap on all, you are mostly in favor of selling man hours as a 3D scanning operator, delivering raw 3D scan data and not develop specific products targeting curtain platforms?
Then this is probably the best place to do just that and more. As you said, it's a very open place here, so you can sell your service here just as good as any where ells.
You can display your work here and store/make available your self initiated 3D scans. In addition, noting stops you from adding to your descriptions (below the models display) that you can also do scans on demand and sell the data sets with full exclusivity if necessary, contact for more info and so on.
In addition, you can also (maybe) provide scans on demand for lower price when the data can stay available for others to purchase. You can then leave for example the opt out price (which can go down over time) in the description.
In case of a buyer opting for exclusivity he would probably not mind you already sold some of the data, he would probably just be interested to make platform specific products with it and be the only seller of them (have ownership).
So you have all the tools to go al directions here, e.g. communication tools (contact button/form), marketing tools and connection to all popular social media e.g. Facebook, Twitter, YouTube, Vimeo, Pinterest etc.
No one can guarantee you sell something, but this place has a fare amount of traffic and allot of artist know about this place. Using all the tools here to make your work visible to a larger crowd will make a difference, but if you don't try then you shall never know.
Remember you don't have to confine your data to one place.
This place has many advantages, some may have others.
So, just upload al that cool 3D stuff and see how it goo's, and also make sure you hang out in popular artists/game forums like polycount etc., letting those indies (independent game developers) know your date and services are available here.
Tip: Also upload those images over there.