Where can I find the best deal on Cat6 FTP cable?

Hello,

I’m currently in the middle of wiring up an apartment within a single-family home, and since I have the chance to do it right from the ground up, I’ve decided to install a complete network infrastructure...
I've settled on using Cat6 FTP for the whole setup.
The issue is finding a decent deal, because I'm looking at needing upwards of 300 meters of cable, which adds up quickly...
So far, the best price I've managed to track down was through this vendor, but unfortunately, they're currently out of stock.
https://www.amazon.com/example-product-link

Thanks in advance.

Newegg has a massive selection of networking gear and cables, but I doubt you'll find a 300m run for $233 anywhere online

You sure you actually need 300m?

Something like that, I suppose. It’s a two-story house, three bedrooms, plus the living room... and then there's the security camera setup requiring PoE, which means the cabling requirements start adding up much faster than one might expect. I'll take a look at that site you sent over...