I'm not sure I can give you the "typical" cost of a Coverstar cover, but I'll give you my experience in looking at prices in the Chicagoland area. It looks like you are in Canada so your mileage may vary.
When I was receiving quotes for pool builds, a automatic cover was on our list of "must haves". For the Coverstar in particular, we were quoted anywhere between $13,250 to $15,000. We ended up going with the PB who was charging $13,500.
There are a few options to look at in the Coverstar lineup. The mechanism type (there are 4 options), track types, and lid types. These will all affect the pricing.
coverstarcentral.com
Some of the other builders we looked at were quoting "automatic cover" prices, but didn't list the model, and since we never got too far into the process, we never found which models they were. Their prices were from $10,000 to $12,000. From my later research, they could have been "APC" covers.
With this pool you are looking at, if you really like it as it sits, and wanted a Coverstar, you may get away with the deck mount cover, which should cover the entire water area as is. Something to look at.
After looking more at these covers and talking with my builder, I almost wish I went with an APC cover vs. the Coverstar we are going to install, but will reserve final judgement until they get it in. For the lid option we are getting, it appears as if there would be an "unfinished look" when the cover is all rolled in. APC uses a trim piece on the top of the FB shell and concrete collar to make everything all tied together, but it looks like Coverstar does not, and in closer inspection, you can still see part of the concrete collar and the top of the shell. At least that is what I've seen from my builder, but I also do not have mine installed yet.
For my PB, when installing a Latham brand pool, they always install a Coverstar for warranty purposes (something about the whole Latham portfolio of companies). When they install vinyl liner pools, they always go with APC covers.