50 dedicated server proxy renewed every month. I do SEO work, for social media I used in the past only 4g or residential as the rate of captcha requests and bans is just crazy with any other proxies haha. I also used to use proxies for the captchas but I moved away from that to outsource the captchas... that alone is like 100 USD per month + 50 USD for the proxies. this way the proxies don't get polluted by captcha request and its only used for signing up and the captcha is being solved by 3rd party.... this method by separating the 2 has increased my successrate and reduced my time.
in the past per campaign I did like 5k captchas when solving it myself with my own dedicated proxies.....and it would take more than 2 days
now... i only use the proxies for sign up ....and outsource the captcha..... this has reduced the amount of captcha requests to just wonder 2.5k and the campaign finishes the same day....
costs wise it is double the cost but it allows me to get more done so totally worth it...
I think you question is very broad mate, something specific you are trying to do ?