Download an iso from Vyatta and build a test network with old PCs and spare NICs for testing. Sure, it's not the exact same as Cisco, but if they're too cheap to buy the real thing for a test lab then you'll at least be somewhat close.
Then, once you realize what you're not getting for your money with Cisco, you can buyt $1000 1U servers and build your own routers (or buy them prebuilt from Vyatta for about $2000) to replace the ciscos and make a profit selling the used Ciscos on ebay.
I do NOT work for nor am I affiliated with Vyatta. But their gear is pretty impressive, and open source.