Half shaft seal leaking

[adamw89_2000]

Not sure if it's actually called the half shaft but it's the shaft coming out of my front differential on my driver side. The seal is leaking. My front end shop said the shaft just pops right out? Is this true? They said just hit it with a hammer and it pops right out and u can take the seal out and replace. Said it's wry easy but they want $150 labor to do it...