You could also try Googling around a bit and find a supplier of IT power supplies. Almost always cheaper than genuine, and you don't need genuine if you know the specs - voltage output and wattage is pretty much all you need to know and you can get that from the label on the original. Unless your lappy requires something wierd. I don't know what your Toshiba's needs are.
I searched and found non-genuine when my lappy's PS died. My task was simple because the plug/socket at the computer end was one of those standard tubular thingies, and the generic PS I bought matched that.
If your plug/socket at the lappy is special, you could cut the cord off the broken PS and join it to the output of the new one. I did that on mine because the output cord on the new PS, though compatible, was too short. Make sure you get the polarity right.
Get a friend with basic electronic knowledge to help if need be.
The effort was worth it - I got an industrial strength, higher capacity continuously rated PS for half the price of a genuine spare.
Continuous rating was important because my lappy functions as a second desktop. Many laptop power supplies are not rated for continuous (read 24/7) use, just a few hours followed by a rest. Maybe that's why the original died
AA