I think 10th overall for Markstrom is an over payment by the Devils, simple at that.
However they also have picks 28, 41, and something around 60. I imagine adding 28th to Markstrom would be a little steep for the CGY management as it only bring them up 18 spots but I don't think anyone would hate it.
The devils have 10 and then nothing until the 3rd.
Could they get creative and do something like:
To NJD: Markstrom 41 and/or 60
To CGY: 10, 80
Markstrom and one second is a pretty good offer. Markstrom and two seconds is a good offer. Markstrom and a late first is a really good offer. So they have different attack angles here. See how it plays out.