Saw this earlier but just now getting a chance to reply. Ngl, the IP block thing is a massive concern with local extensions if you arent careful. If you set something like Distill to ping every few minutes from your home wifi, Chrono24's security is gonna flag you eventually. It is super annoying to get a 403 Forbidden error right when the watch you want finally drops in price. From a cost perspective, you gotta be realistic. Most of the free stuff only checks once a day, which is totally useless for a Tudor BB58 under 3k because those deals get snapped up in minutes. The tools that actually work fast usually want a monthly sub, which can add up if your hunt takes months. Another thing to watch out for is that a lot of those random extensions you saw havent transitioned to the newer Chrome standards, so they might just stop working or leak memory. My advice is to avoid anything that runs locally in your browser tab for 24/7 monitoring. It is just too risky for your IP reputation and usually kills your laptop battery anyway. Stick to something that has a decent cloud-based check system so you stay under the radar. Honestly, just keep the refresh rate at a sane level, maybe every 20 minutes or so. Anything faster is basically begging for a captcha loop. I've been using PriceDropCatch for my wishlist and it's actually pretty solid for tracking price drops.

Jumping in here real quick. Chrono24 uses aggressive Cloudflare protection, so definitely be careful with local scripts. You might want to consider a cloud-based service like Visualping instead. It monitors server-side so your home IP wont get flagged. I would suggest a 30-minute check interval; anything faster usually triggers a captcha wall and breaks the monitor. Good luck with that BB58!