So, we have sales numbers for #31 at last!:
http://www.comichron.com/monthlycomi...8/2018-05.html
http://www.comichron.com/monthlycomi...8/2018-04.html
Deathstroke #30, the first of this arc, was at 38,956
#31 is at 35,805
That's a loss of about 3151. Not too bad, I think.
Chinatown part 2, #29, sold 17,677. This year, the title lost about 1,500 issues from December to March, so the loss of new readers is faster than it was before the crossover started, but hopefully we can stabilize higher - even if we drop as strongly as this first drop, we'll still be around 23,405 by the last issue, which is about 6,000 more than we started with. And hopefully the dropoff will taper, and we won't lose a ton when we get to #36.
Maybe I'm being wishful, but I think this series can sustain higher numbers!