I am also very curious about the insuance and maintenance costs. I'm also wondering, for a minifleet cab, who bears the insurance and maintenance costs - the owner, the leasor (garage, etc.), or the drivers?

Here are some of the costs I've run across, from the TLC website - not very informative as these are teh smaller costs:

Two-year license: $1100; two-year inspection fee: $300; medallion tin: $10.