For 15 USD/month you get 512M RAM, 5GB disk and unlimited bandwidth.
Image is accessed simply via VNC.
I managed to setup my aidademo in few minutes:
1. Register on rackincloud.com
2. Log in and go to Start Appliance
3. Click Start Pharo
4. Choose subdomain, like aidademo, click Start
5. In Your Rack click your appliance, like aidademo.rackincloud.com
6. Click VNC tab and set VNC password
7. In your VNC viewer open like gate1.rackincloud.com:5914
8. Now you are in Pharo image
9. Right click and open Tools->Configuration Browser
10. Under Unverified right click Aida and choose Install...(Stable)
11. Open Workspace and evaluate the following script: