I hope we can all agree that straps are just a matter of personal preference. My 2 cents:
I like that straps can give you a little extra oomph when pushing off and allow you to rest your hands. They're also useful for making sure your poles don't accidentally go scrambling down the side of a steep trail.
But ultimately, for me, I found they get in the way most of the time, especially when hiking up and down trails around my neck of the woods (New England) where people seem to not believe in switchbacks. I frequently have to move my hands around the poles when hiking up and down steep trails, so the straps just get in the way. I was hiking out in California recently and could see how straps would be more useful in the smoother trails in the Sierras, but I'd still rather go without them. In my (limited) experience, then, straps have been mostly dead weight that occasionally is useful and frequently annoying. :-)
That's just my experience though. Live and let live.
Anyway, the poles are still available!
Price drop to $75 shipped. As long as you can live without the straps (I certainly can), these poles are a great deal since they're practically new (again, only used once on a day hike!) and retail for about $160 last time I checked.