http://www.nikonchat.com/f-2-8-nikkor-lens/

Nikkor 105 f 2.8 Micro: Is there a cheaper alternative with similar results?
I would love to buy the Nikkor 105 f 2.8 Micro. But not really you can afford at this time. Is there a similar objective, but cheaper for extreme close up or macro photography? Thanks
You have a couple of options. 1) Buy a kit of three diopters (1, 2 and 3) until you can save your pennies and buy the Nikkor 105 macro. 2) Find a good used Nikkor 105 macro 3) Buy an extension tube and use it in its current target of close approach … until you can pay the 105 mm macro
unboxing nikkor 24-70 f.2.8