Here's a neat site:
ToyoDIY
You can search by car and then cross reference by part number, for a start 2010 Prius uses a 30900-47060 or 30900-47061 transmission
the 060 crosses to the plug-in Prius
the 061 crosses to the Lexus CT200H (which lists for $3,160.10)
30900-48070 or 30900-48090 Highlanders cross to Lexus RX350H ($4,125.94)
30900‑33011 Hybrid Camry ($4,290.54)
30900‑75040 Lexus HS250H ($3,409.61)
30910‑30020 Lexus GS450H (Lexus list:$16,774.68 dealer price:$5,421.47)
30930‑50050 Lexus LS600H (Lexus list:$38,579.97 dealer price:$7,242.76)
-mort