Proxycrawl seemed interesting, so I just tried it out. It appears to have problems with redirects, which is something I expect they would have figured out.
I’m crawling around 80-120M per month and the price for me fits my needs. But I suggest that you contact them if you have special needs or requirements.
Also you have to consider the amount of work, time and money that you will save by not maintaining your own system to avoid blocks and bans from the websites you are trying to crawl. With them you just call an API endpoint and you don't have to care about all that
I've been using it for around 3-4 months with different sites. For linkedin it's been a bit more than 2 months. They are a good startup and they've been improving a lot their services. They only count successful requests so you don't have to worry about fails.
If you get a bigger package they will raise your limits I guess. But I suggest that you contact them directly