Something I know a lot about. I have cameras all over my property, and I'm an IT guy by trade.. So, I've done a lot of research on it, and wound up with Ubiquiti. They are the leader in "commercial grade" but consumer priced gear. I'll warn you though, it's not "cheap". It works great, it lasts (I have installs that are over 5 years old still working great) and it is wildly configurable. So, that said, let's figure you what you need:
Cameras (get as many as you need):
UniFi Video G3-FLEX Camera
– Ubiquiti Networks
(There are other options too, these are just the most cost effective)
Location 1 (allows for up to 5 cameras, if you need more, get a bigger switch) :
Switch:
UniFi Switch 8 (15W)
– Ubiquiti Networks
DVR/controller:
UniFi Cloud Key Gen2 Plus
– Ubiquiti Networks
Signal transmitter to location 2:
https://www.amazon.com/gp/product/B078NN1J4K/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
Location 2 (allows for up to 7 cameras, if you need more, get a bigger switch):
Switch:
UniFi Switch 8 (15W)
– Ubiquiti Networks
Signal transmitter to location 1:
https://www.amazon.com/gp/product/B078NN1J4K/ref=oh_aui_search_detailpage?ie=UTF8&psc=1
With this system, you'll need to run cat 5/6 cable to all the cameras. You may what to hire this done, making up Ethernet ends isn't hard, but, if you've never done it before, it could be frustrating. Terminate everything into a punch down block and then plug it all in. I can add pictures of my installation if you'd like to see it, I have 5 cameras on my barn and 5 cameras on my house. Still have some blind spots, but, it's pretty good. I can also point you at the right cable to use (DO NOT use the cheap alum with copper coating (CCA), you'll hate yourself for it, pay the extra, get real copper) and the racks/punch downs/etc. If you had all the equipment ready and called a guy to come do the cable runs for you, you're probably looking at a few hundred bucks (assuming there's no crazy attic/underground/etc work).
All in, I've probably spent about 2K on my setup. I also have WiFi in my barn too, it's real easy to add that to this setup, and it works as a mesh, so when I walk from the house to barn, I have WiFi the whole way and it hands off seamlessly. It's a very nice and very reliable system.