The solution I tested is billed per the number of physical phones connected (mobile proxies and other handy features are already integrated).
Supports multiple application instances on one phone (one can run say 4 - 6 social media accounts per phone)
Controlled from a PC.
So you can basically test with one dedicated phone, fine tune it, and expand from there.
Depends on what sort of content you want to create, you may need tools and resource for that as well.
The cost breakdown in my case would be:
- a dedicated phone (or phones) - you can also buy second hand (from a shop that sells them with a guarantee) or cheaper brands, as long as the phone has enough power
- software license
- a dedicated PC that powers the phones (should have sufficient RAM)
- tools for content creation and time investment
- electricity