Some websites offer date-range APIs, which are far more efficient for historical data than scraping HTML. I always check for these before starting.

Slow response times or timeouts happen on heavily trafficked sites. I usually add a retry mechanism with exponential backoff to handle this.

Some scrapers use machine learning-based OCR tools to recognize characters in non-English alphabets.

eBay has a robots.txt file, and I always check it before scraping to make sure I’m following their guidelines on what’s allowed.