Is there a similar designed solution that combines say 10 cheaper SOC (raspberry pi's?) and a 100mb network? I would love to play with clustering setups at hom

Is there a similar designed solution that combines say 10 cheaper SOC (raspberry pi's?) and a 100mb network? I would love to play with clustering setups at home, but almost ~$13k USD is way over my hobby budget. My only option currently is really visualization for learning.