If NEM software is mostly cloned from NXT with a few changes 1:40 will be a very good deal.
You seem to be misinformed. There is no common code between NEM and NXT. Aside from the "N", they're completely different.
It would help if you didn't have links like
https://github.com/NxtEM/nemfrom your facebook site
By the way, does Nem use secp256k1 like bitcoin?