Currently, plebbit-cli uses the IPFS DHT which consumes about 8TB of bandwidth per month (ymmv). Be sure your VPS has at least 10TB of bandwidth, you can find relatively cheap ones with 20TB/mo these days, but that’s pretty much the max I think, including unmetered/“unlimited” ones. BTW, we will use a plebbit-specific DHT which will reduce bandwidth usage by orders of magnitude. But for that, we need more users on full nodes, otherwise plebbit would be easy to attack via DDoS. This is why we use IPFS’ DHT, it’s using all IPFS nodes close to you so you can’t DDoS plebbit (ie. plebbit has tens of thousands of nodes).