Well, you can't get a "new" one as they have been out of production for quite a while. I couldn't find an end date, but they first came out in 2002.
You could replace it with a new Coolpix p950. They aren't necessarily cheap, but they have considerable advantages over the 5700. Most notably 16 MP resolution versus 5MP on the 5700. The lens is 24-2000mm equivalent to full frame 35mm. That is a significant bump from the 35-280 you now have. It also has significantly higher ISO capability, and I'm sure the autofocus is much better as well. There are likely lots of other upgrades as well, since advances in digital photography have been significant over the last couple decades.
Some folks really love this camera for a small, light and compact birding camera, especially considering the reach it has at full zoom. They can be had for $850 new, and a couple hundred less used. If you shoot a lot, I think it would be well worth the money to upgrade, assuming it's in your budget. I understand that not everyone can drop the better part of a $1000 on a new camera.
