Does anyone have an idea on cost to replace from a dealer for this part?

I had a dealer rebuild mine. They just charged a $50 bebuild kit and 1.5 hours of labor. I am assuming it was some new bearings and seals was all. I was out of there for under $150.

I don't remember exactly, but I think they wanted $500ish for a new one. I've gone a lot of miles after having that done with no trouble (~80k?). If the dealer says it's a candidate for it, I at least wouldn't have any second thoughts going the rebuild route.