Hi jupita12 and welcome to Platinax.
What I find interesting is your PPC spend sounds pretty low - I should expect you to be able to expand your spend and increase your business through this.
Also, as a SEO, I very much believe that this is a great way to deliver traffic and sales.
You may also want to consider advertising on blogs of forums that cover home entertainment subjects - which offers potential with both traffic and SEO.
Simply an introductory 2c.