I have not used Vultr this month, but they charged me 2 yen. Maybe because I had this startup script on my account. This script was apparently last edited on June 15, 2019.

#!/bin/sh

# create swapspace

apt update -y
apt upgrade -y
swapon --show
fallocate -l 2G /swapfile
chmod 600 /swapfile
mkswap /swapfile
swapon /swapfile
nano /etc/fstab
swapon --show

touch ~/000_created_swap

apt install emacs -y

touch ~/010_installed_emacs

# Install Urbit
apt install g++ -y
apt install git -y
apt install libcurl4-gnutls-dev -y
apt install libgmp3-dev -y
apt install libncurses5-dev -y
apt install libsigsegv-dev -y
apt install libssl-dev -y
apt install make -y
apt install openssl -y
apt install pkg-config -y
apt install python -y
apt install python3 -y
apt install python3-pip -y
apt install python3-setuptools -y
apt install zlib1g-dev -y
apt install ninja-build -y


touch ~/020_install_python3

pip3 install --upgrade pip
pip3 install meson

touch ~/030_installed_meson

git clone https://github.com/urbit/urbit
cd urbit
./scripts/bootstrap
./scripts/build
ninja -C ./build/ install

# end install urbit

touch ~/040_installed_urbit


# create wanbus user
adduser --disabled-password --shell /bin/bash --gecos "Wan Bus" wanbus

touch ~/050_created_wanbus

# allow wanbus sudo access
usermod -aG sudo wanbus

echo "" >> /etc/sudoers
echo "# allow wanbus passwordless sudo" >> /etc/sudoers
echo "wanbus ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers

echo "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQDhh1ULPA9zmSKNhK8+rqw9vIRZjLngHiNnwH7jV0fXwTYfTzIW22g4db0b52FZ5voAwSSET907qE2KomMuzmHtqGs9HjOuw+dNJy4+sgsCiDuQAo56Au413+FD5RrJOP29dL39Coh1N74wJTZ+TlUR8aDRK28JN9um8zZwEpTzShPDLR1PIzovN4Z9MUfM6gcDMzRZcHaHoDD3yIhWGMAXJ/QtWVHre4mLIx0nP30VUXhTncGNuwlKgMJSkggM2w7OfPLDLy2PLmrr9sPpt4okK8y+C1ZtNIW99YFbG7uGFPvPntQ3jNrpp34pds4TgjrYJ+CtEssqF50DDn/KZ98PUvP+mH37bUWwVbfu522xIC39D9ctbmBQVBpqsJjuCc5XB5Lv/2rb52LwDuulzJ50YhjYJyGr8zU2n9Vta2WUpBt6veDZ4VrUyu9lTrD18i6FyXkj0wZTEzkf/oOtoMuiqE6/V9wsDr6LJ1u10qv1120YvFA/svUSpn7JQ05CH5wbFHL+0Pby3+oFmRZ6zXlNoNYN+JGXQmIOP/Sq5R/dxBBS6sh3BZ8K1c9KjkapSfKB+lMNZ2nFGqPqcylKy2M9r1k47sdMWF1UHWhB47HVUJfLQPrQwrkmnr+X5PEs5WZQyxwjZwWacYCUQ09shdWuW/Uzlhl1unpd9YFNleSmWQ== thunderrabbit@silver-monkey" >> /home/wanbus/authorized_keys

chown wanbus: /home/wanbus/authorized_keys
chmod 600 /home/wanbus/authorized_keys

echo "#!/bin/sh

cd ~
git clone https://github.com/thunderrabbit/new-DH-user-account.git
cd new-DH-user-account
./setup.sh
echo now removing go.sh since its job is done
rm ~/go.sh
echo now log off and see if you can log on as wanbus without password" >> /home/wanbus/go.sh
chmod 755 /home/wanbus/go.sh
chown wanbus: /home/wanbus/go.sh

touch ~/060_created_gosh


echo "#!/bin/sh

python3-pip python3-setuptools zlib1g-dev ninja-build
sudo -H pip3 install --upgrade pip
sudo -H pip3 install meson

git clone https://github.com/urbit/urbit
cd urbit
./scripts/bootstrap
./scripts/build
sudo ninja -C ./build/ install" >>  /home/wanbus/urbit.sh
chmod 755 /home/wanbus/urbit.sh
chown wanbus: /home/wanbus/urbit.sh

touch ~/070_created_urbit.sh

touch ~/999_done_script

Just in case I decide to use them, I can likely use the script with small tweaks to get urbit running again.