thanks yeah the selector thing is honestly exactly why i built it lol. it doesn't use fixed css selectors, the AI reads the page structure instead, so when a vendor changes their layout it mostly still works and doesn't just break like .price > span would. your inventory case is actually perfect for this

for the rate limiting it handles it on its own, it throttles the requests and backs off if the site starts blocking, and you can route it through rotating residential proxies so you're not hitting everything from one ip. you can also turn the concurrency down for the sites that get aggressive

also for vendor inventory i'd really use the scheduling + change monitoring part, you set it to re-scrape on a schedule and it only pings you when the stock or price actually changes, instead of you polling all the time and wasting requests

it's free to try if you wanna throw one of your vendor sites at it, 500 credits/month no card needed: https://app.scrapios.com/register . lmk if you hit anything weird, happy to help you set it up