Sure you want as many HQ links as possible, but as a rule of thumb, according to my pricing, this domain would be $70, depending on TF.
If it has low number of power links as you say, you can drop it to $50. If it has high number, you can raise it to $100. Even if it had Huffpost and one other "super amazing authority" links, I wouldn't price it above $100. Another factor that you could consider in these cases is how many links point to homepage. If out of 70, only 5 point to homepage, then it's quite meh. And there are plenty domains like that.
And of course, there's shit link and then there's shit link. How bed is the rest? If it's at least some forums or no-name contextual links, then those still hold power. Plus there's shittons of links that you will see only in GWT etc. So if the domain has at least 10% of power links, as in your case, then it's pretty decent. If there's 1 link that gives it TF and rest is just shit from link sections, then that's a no no.
I admit I am tad drunk now, but the pricing comes with a practice. And in the end, we can price all we want if we won't get a buyer for the price. Market will tell you the price eventually.
