Carl Zeiss, Leica and Voigtlander macro lenses comparative review

slrlensreviews.com has a review comparing three macro lenses: Carl Zeiss Makro-Planar 100mm f/2 ZF, the Leica APO Macro Elmarit-R 100mm f/2.8 and the Voigtlander APO Macro Lanthar 125mm f/2.5.

From the review:
From price perspective, all three lenses trade at about the same level these days (as of late 2008). However, there's one caveat here (or two). As mentioned earlier, Voigtlander APO Lanthar 125mm f/2.5 SL Macro is no longer being manufactured. Back during production years, this lens was priced at ~US$600. That is the price I paid for it back in late 2006. However, since the lens was discontinued, the price for new old stock, as well as used copies was climbing higher and higher, reaching ~US$1,500. Combination of the hype among users as well as the 'rare-iness' fact certainly contributed to such dramatic hike in prices. However, Voigtlander is not the most expensive lens in the group, since new copies of Carl Zeiss Makro Planar T* 100mm f/2 sells for ~US$1,500, while new copies of Leica APO Macro Elmarit-R 100mm f/2.8 gor for as much as US$4,500 (used copies go for much more 'reasonable' ~US$1,400).