The cost of installing another light is very low. You can buy the wire [14/2 Romex] by the roll or by the foot. Then just pick your housing and trim. The housing needs to be for "Old Construction." If you have attic access you can use either type. I am glad to see that they put in the PUSH IN wire connectors. You don't even need wire nuts anymore. I just put up a video of me installing it if you are curious to see how it is done. I'm installing the 6 IN. IC REMODEL HOUSING from Home Depot.