Quick reply while I have a sec. Are you only looking at Amazon or have you checked Dell's site directly? Sometimes their business discounts are better anyway tho... I would suggest being careful with refresh rates, but you might want to consider:

• Distill Web Monitor extension
• Set it to 5 minutes so you dont get flagged
• It runs locally so it avoids those IP blocks you ran into.

I have been in that exact same boat so many times... its so frustrating when you see the price dip but cant hit buy fast enough. A few years back I was hunting for a high-end GPU and the standard trackers were always ten minutes late. Basically it was a game of who could refresh the fastest manually. Heres what I learned from messing around with my current setup:

• Cloud-based stuff is almost always gonna get caught because those IP ranges are already flagged by major retailers.
• Keeping things local on my own machine made the biggest difference. I ended up running an old laptop 24/7 just to handle alerts.
• Speed is a double-edged sword. I once set a tracker to check every 10 seconds and got my home IP soft-blocked... not a fun conversation with the family when they couldnt stream anything for a day lol. Honestly, sticking to a local setup that pings every couple minutes has been my sweet spot. It doesnt trigger the bot alerts but its still way faster than those free sites. Hope you snag that Dell monitor, its a gorgeous screen tho.

Late to the party on this one but I totally feel your pain with the bot detection issues. I went through this exact same struggle last year when I was trying to find a specific high-end panel for my home office. My initial approach was basically identical to yours—I tried a few Python scripts using BeautifulSoup and Selenium, but the scraping protection was just too aggressive. I spent hours tweaking headers and delays just to get one successful request before being blocked again. It was a mess. Eventually, I realized that consumer-grade scraping from a residential IP just isnt viable for high-volatility items anymore. I transitioned to a methodical setup that utilizes cloud-based monitoring because they handle the proxy rotation and session management on their end. I have been very satisfied with the reliability of this price alert tool for these specific scenarios. It works well because it checks at a much higher frequency than the standard hourly crawlers, which is exactly how I managed to snag my current setup at a massive discount. The technical advantage is really in the headless browser simulation they use. It mimics real user behavior much better than a raw request library ever could. I honestly have no complaints now that I have offloaded the infrastructure side of things to a professional service. It saved me a massive headache and let me focus on my actual work instead of debugging my own code all night.