Well, OK, I'll bite:
Coyote Point is perhaps the largest of the reasonably-priced load balancer appliance makers.
Kemp Technologies is another commonly seen name.
Barracuda Networks is most known for their spam filtering appliances, but they also make load balancers.
If you don't need SSL on the load balancer, then HAProxy packaged as an appliance is a very viable option. Scroll down to "Commercial Support" and "Products using HAProxy".
Lastly, there is a network of brokers who re-sell second hand F5, Citrix NetScaler etc gear. That might also be an option.
Of the above, my personal choice would be 1) Coyote Point, 2) HAProxy appliance, and 3) Kemp. Fair warning, my personal opinion is based on older models & some speculation, and may not be accurate -- caveat emptor.
About the "firewall" part of the question: What I see is that firewalls mostly are a separate unit now, and the long-term trend is that firewalling functionality may move into the router. The load balancer is still a standalone unit, either an appliance, or software installed on a server. There are firewalls with load distribution based on for example IP hashing, and that can be a viable solution, but look at the health check and failover parts -- these are often lesser developed.