I bought a Discord Delivery Bot. In addition to $ 150 for software you will have to buy VPS 20$/month (or run the software on a home computer, which is not very convenient), Proxy 15$/month, SMS activation service 15$/month. When you purchase you should consider additional expenses.
With regards to speed, my weak VPS can only accelerate to ~300k message per day.
I use bot only a week, no problem now. I hope you will keep the software in good condition.
Thank you for your product, it is currently the best on the market.