Neither seller knows what he's talking about.
The first ones will not fit RL35 but will fit RL45, RL45.2, RL60 and 60.2! RL 35 were never meant to be wall or stand mounted. They are a bookshelf speaker.
The second ones will not fit RL7000 and if they do, they won't fit RL6000 or RL60! It is difficult to get an idea of scale from the pictures.