Does Woolwich marina let you do DIY too? I've been happy doing it at Woolwich Dock
www.woolwichdock.com/ - fully up on the hard, drive your car right up beside the boat to easily grab your tools.
That said, cost about $1000 to lift, stand and launch. Then pay for my own materials, supply labour and time etc. This year I went with Gladesville bridge marina, was about $1200, felt pretty luxurious to drop it off and pick it up all done for me.
Those prices are for a 22 ft boat btw.