Suicide Squad Comics Stay Away or A Time to Buy ?

Take a look at this graph

So this graph shows how Suicide Squad 1 New 52 9.8 reached heights of nearly $400 on the run up to the Suicide Squad film , which in my opinion wasn't that bad , not brilliant but not that bad ! I was disappointed as the comic was good !

But look at that graph how can a comic with such a brilliant cover go from on average $60 book up to $400 and then back down to around $60 again.

With James Gunn at the helm for the next Suicide Squad film , and we all know what he can do for a franchise , is this a time to buy the first incarnation of the Suicide Squad with Harley at the helm.

Thoughts ???