Hey guys!
I would like to know if there is any way to reduce the mesh of more complex objects without losing quality, and do this using blender or zbrush, I've already tried some following a tutorial on YT and the object ends up losing quality and the mesh doesn't reach be reduced efficiently when sending to SL.
In the PrimPossible store "1 PRIM" they even have some things that are somewhat complex and with very low Li (prims), how do they do that, what would be the technique for doing so?

@Chakall, some people have mesh studio, they build with normal prims, and add a script in it
when they end the build work they can set it on low prim before they make the dae file
this is a old version of it 

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when you buy that you will get automatic a update for the newest version so far i know


or mesh generators 

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Sometimes they cheat,and make all the LODs 0,or as low as possible,and use cube as the physics.Sometimes jsut settings Lowest LOD to 0,and using lowest or cube and calculating with retain % at 0 can give a lower prim count.You can also use decimate geometry in blender to help reduce tris,but would need to unwrap object again and stuff.

Also,PrimPossible cheats and uses a prim that rezzes as a phisical prim,and the items rez as temp to count as 0,which is cheating,cause it still counts against sim prims.

Thank you very much @lagertha and @necrok   :)

I have seen people delete all the faces exce[t 1 and use that as a LOD model and comes out 1 Li just need to keep 1 face per material dont delete the vertex just the faces. give that a try and save it as a different name you wont upload it just use it for LOD