That's the issue with Twitter and this is their fault. Google was revolutionary when they introduced a way to advertise (yes, AdWords) for only $ 5 while others (e.g: Yahoo) required thousand dollars as an entry point. I know it is not easy to develop/set up such system and deal with millions of retail customers but... in 2016? You can even do this with Twitter Advertising so I don't understand why they can't solve this for their API.