Yup! I picked up my first one probably 16-17 years ago, also when they were still cheapish on eBay. I don't think the one I'm currently running is my first one, I have two and a parts unit now.
I also ran their RaQ series as custom Linux router/firewall boxes for a long time. Still have two CacheRaQ 1s, which were designed to be caching web proxies and have dual Ethernet ports. I think they came out of production 5 or 6 years ago, ran fine with Debian mipsel until the customer upgraded their Internet connection and exceeded the little 150 MHz CPU's capacity!
I also ran their RaQ series as custom Linux router/firewall boxes for a long time. Still have two CacheRaQ 1s, which were designed to be caching web proxies and have dual Ethernet ports. I think they came out of production 5 or 6 years ago, ran fine with Debian mipsel until the customer upgraded their Internet connection and exceeded the little 150 MHz CPU's capacity!