Lippert doesn't make anything, they just gobble up companies that do and then "manage them, not" and take their "corporate cut" to gobble more companies.
I'm not surprised that the "corporate edict" came down to charge $1200 buck for that unit. I don't know anything about the Lippert system, but I designed and built hydraulic operated products and fixed hydraulic rooms system on my rig (made by HWH) and can buy complete pump and tank unit for around $300 all day long Hydraulic Power Units
, cylinders for $100-200 and any length hose with fittings for under $50.
Lippert has an interesting corporate strategy of ensnaring a manufacturer. Start with a cheap frame and then we will sell you everything to hang on it and stuff in it. One stop shopping. And then like in that song "Sixteen tons" by Tennessee Ernie Ford, "You can owe your soul to the company store".
You want to become an RV manufacturer, buy an empty building an call Lippert.