I was quoted $3500 for a replacement cover from the original builder of my pool...its a grecian shape, 30.5x18.5.
If you don't already have that type of cover, you'd need the eyebots drilled into the concrete as well.
I've seen winter covers for cheaper online, which would be a DIY measure and install. I've also seen them quoted higher, especially for custom shapes. Mine is a pretty standard shape.
In the case of the mesh safety covers, the advantage is safety, eg if you have small children that might play in the yard in winter. The second advantage to the mesh safety type is that snowmelt drains back into the pool and you don't need a cover pump.
The third advantage of either the mesh safety cover or the solid style cover is that the spring-loaded attachment holds the cover in place firmly so that autumnal debris etc. does not get into the pool and the wind in a storm will not move it.
My cover is a solid-mesh hybrid with a drain square in the middle. Its heavier than the mesh. However this type is not really a safety cover the way the mesh ones are. I've heard a few anecdotal reports tat the mesh cover does allow a little sunlight and dirt to get in...but you can offset any algae etc. by opening "cold" while the water is under 60 degrees, which is a best practice anyway.