Here's the one I use and it's normal price is less than $20
It's great because it puts the book at either an upright angle or lays flat - it's adjustable with plenty of different angles in between those two extremes. It makes ie easy to find a comfortable reading position.
It has spring arm holders that hold the book open and are easy enough to flip pages but strong enough to hold the books open. It has a lip at the bottom to hold the book up and off your body.
I do use a pillow or pillowed lap desk when I'm sitting in my recliner to make it more comfortable on my lap but it's not actually required. If I'm reading at my desk, I don't need that.
It's also very light weight but that doesn't mean it's flimsy, it's not. It's strong enough to easily hold these heavy Omnis.
I will say, that I don't like using it to read my Spawn Compendiums. The reason is because those don't have hard covers that are bigger than the pages. SO when turning the page, the bottom part that sits on the lip of the book stand, drags across the book stand and IMO eventually will wear out the pages. So I'll often read those on a table.
I've been using this for a long time, hasn't failed me yet.