Hi there,
At this point in time around $0 to $10 wholesale best case scenario. There are a large number of 6N domains unregistered with the number 4 in it. And there are a decent number that you would consider slightly better than yours.
Here is a website which runs lists from time to time which you may find handy. http://dndigger.com/index.htm
Last 6N list is as of 28/10 and here is one (out of almost 300k) that is available to register.
873354.com
Starts with an 8
Followed by a 7, sequence
Double 33 in the middle
Ends with 54 which is considered somewhat lucky.
Best of luck.
PS: i am not an expert in numerics by any means, just an opinion.