I've seen what you are trying to sell and IMHO, you are mostly ahead of any trends. I've made posts about this, though haven't named any names.
I mean there's just no reason for anyone to bid on something like 1882373 in 7N at this point in 7N... Though it has '88', do keep in mind there are 500,000 7N with 88's in them. 888's are more rare @ about 50,000 names and those are just starting to see some base bids.
Certainly, one could certainly post a bunch of junk and/or names ahead of their time -- but it's hard to decide from that there's a slow down.