Proxies for price monitoring
Retail prices vary by location, and sometimes by who is asking. Price monitoring means looking from the right place, often.
Where to look from
Check from the country and city of the shopper whose price you need. ISP and datacenter proxies let you choose both. Residential proxies rotate and do not let you choose.
Which line
A fixed set of locations checked every day suits per-IP static lines. A very large catalogue crawled in bursts, where location does not matter, suits traffic-billed residential.
Staying polite
Keep the request rate low per address, spread requests over time, and read the retailer's terms and robots rules before automating.
Keeping data comparable
Use the same address for the same location on each run, so a changed price is a changed price and not a changed vantage point.
Keep reading
Put it into practice
Create an account and place a small first order.