Silly-Sausage As far as I am aware, the almost 300 studios that you can see when not logged in are the same that you will get with premium. I think you don't have any studios in the list of creators for which it will turn out that there are only trailers. However, some studios might only have a small number of full videos on SLR as teasers. For example, you will get 5 full videos from CzechVR but not the full catalogue. You can find an overview of the number of scenes per studio here: https://www.sexlikereal.com/studios
And if you were a member a while back, you might notice that some individual studios are not on this list anymore. I think the last big player that has left SLR to go exclusive was VRBangers/VRConk approx. a year ago.