How do you figure 4N's have gone down? With numbers and in this case such a limited number of combinations, it all depends on the combo, how it reads etc. The last two sales I see are:
6817.com 47,500 USD 2015-11-11 GoDaddy
7076.com 25,000 USD 2015-11-08 GGRG
Realize there are many many many...