Pay per ip vs pay per usage

which option is best for account management and why? looking to scale up to managing 1000 accs but idk which plan is best

right now i manage 10 accounts manually with 3 devices (old smartphones i don't use)

Whichever is cheaper.

If you want to manage 1,000 accs, the data usage can be in the couple hundred gigabytes range monthly with scraping and uploading. If you want to know a closer estimate, measure the data usage of managing 10 accounts presently. If you want to do roughly the same with 1,000 accounts, what you do now with 10, multiply the result of 10 accounts with 100.

Proxy providers usually offer pay per ip plans with unlimited data usage.