I guess the Jetta's did come with the hydro's. Yes, eventually, the sacks burst.
Prices range from around $20 to $30-something.
I have converted some of my rigs back to the front solids which I think came on many of the Golfs. Rock Auto still has a solid one offered for more money. BUT, the catch is you have to have the hardware to mount it.
You may also have fatigued the rears as well.