Sigma 50mm f2.8 Macro
The Sigma 50mm macros are almost as good as Minolta's and generally a little cheaper. There are 3 (at least) versions, which are all good. The newest versions are part of Sigma's "EX" series (the "EX" and the "EX DG") and the older version is simply the 50mm f2.8 macro. Like all macros these are slow focusing but extremely sharp. Prices vary considerably, but expect to pay $100+.
Links for reviews and current Ebay auctions for this lens below. (Links open in a new window)
Dyxum Review - Sigma 50mm f2.8 EX
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Dyxum Review - Sigma 50mm f2.8 EX DG (Digital Coating)
 | Sigma 18 50mm F 28 EX DC MACRO for Minolta Maxxum Sony |  |  | US $360.00 | 2d 20h 19m |
 | Sony Minolta Sigma 50mm f28 Macro AF VERY SHARP | | | US $184.00 | 6d 9h 38m |
 | Sigma 50mm f 28 EX DG Macro Lens Minolta Sony KIT NEW | | | US $299.00 | 13d 12h 15m |
 | Sigma 50mm F28 Macro for Sony and Minolta | | | US $275.55 | 17d 15h 13m |
 | Sigma AF 50mm f 28 EX DG Macro Lens Minolta Sony NEW | | | US $299.00 | 19d 11h 33m |
