which ebay cisco router for L3

[silvercas]

i work in a small business ~ 100 nodes. I have some cisco switches but would like to experiement with another ip range, currently using 192.168.1.x. I would like to use 192.168.3.x or 10.0.1.x .

Which router on ebay would allow me to funnel my traffic from the 10.0.1.x/192.168.3.x to network connectivity on the 192.168.1.x

Thanks