Non consistent pricing and VPN required

This a fairly pricey camera system. I bought last fall, 5 eufycam3 cameras with the base, one s350 inside camera and one solar panel. They are as advertised and I can deal with their limitations. My main issue is the inconsistent pricing. I want to add a extra camera and the pricing is all over the place. At the end of 2023 I bought a open box at 119$. Last week I saw it very close to the price of a new camera and this week at 191$ when you can buy the home base with 2 new cameras for 400$. A other inconvenience is that they won't work away from home without a VPN on my phone. I still recommend this product because it does what I need them for.