Lippert components makes a lot of parts for our RVs, including retracting steps, leveling jacks, and slides. I needed a motor for my step; Lipperts cost is $198.08, plus shipping. The same part, complete with Lippert's label on it, is sold under the Stromberg Carlso name for $145.95; the source I found included shipping. Although Lippert correctly told me a new motor would solve my problem, when I asked them were I could get the part they failed to mention it was available from other sources under the Stromberg Carlson name.
Check it out before you buy.