If you do it yourself, I think it can be done for $4000 cdn. You can buy some parts from Spoolin and for Extreme Machine and get a package for $4000.
Here's roughly what it can cost in Canadian money for all the hardware you need:
-Turbo, between $800 and $1200
-Intercooler $600
-Downpipe $300
-Manifold $500
-Filter $50
-Piping and hoses and fittings $400
-BOV $100
-Extra injectors kit $800
-Clutch between $350 - $650
-Exhaust 2 1/2" or 3" $400
-Muffler $250
As you can see, if you go for a simple setup without the exhaust and a not to expensive turbo and intercooler, you can do it under $4000. But if you go for a better quality and complete job, it's over $4000.
If you are looking for a bolt on kit installed on your car, $4000 cdn is realy short. A more realistic price to get the job done is between $5000 and $7000 canadian depending on the setup you want and on which parts (turbo, BOV, managment system, etc...) you want.
Mine done by Extreme Machine cost around $5500 and there another MP3 in Montreal made by Advance EFI who cost around $6500 including the clutch modification.