I called my local Acura dealer to discuss. They said the bumper had to come off, as well as any other surrounding parts that block access. The cost of the headlamp was from the dealer is $153, plus labor of $45 (apparently a 30 minute job), plus tax. I know the headlights are lot cheaper at the parts store, but I do not know if I have the proper tools (or know how) to get to access to the headlight.
I may take mine to a local shop that works on imports. Surely they are cheaper than the Acura dealer.
I don't think I helped you much.