So sorry for the late reply.
We do not sell proxy. But if you need, we can recommend a proxy website to you. Here you go:
You can buy proxy from other website too. But please buy HTTP proxy, TrafficBotPro only supports http proxy.
Btw, you can use VPN in TrafficBotPro too. Please find a VPN which can auto change its ip, also you can configure the VPN to your computer to use.
Waiting for your news.