CarProof - Canadian Vehicle History Information
CarProof offers a variety of different reports with prices ranging from $24.95 to $44.95. There major claim to fame is that they offer Canadian information that isn't available to U.S. organizations (like Carfax). This does make sense to me but I don't know if it justifies the extra cost of their CarProof verified report. That's a decision you'll have to make for yourself.
The reports offered by CarProof seem very comprehensive and - as they stress - do include information that MAY not be available from American companies.
CarProof does not offer 'unlimited' reports (as Carfax does) so you must buy each report singly if you are looking at a variety of used vehicles for purchase. This makes them quite an expensive option at $24.95 per report (versus $19.99 US for a single report from Carfax). I suggest you compare sample reports from each vendor and see if you think you need the additional information CarProof is offering.
In terms of the uniquely Canadian information that CarProof offers when I searched in Carfax's help file using the word Canada I found this "Carfax now receives information from each Canadian province. These records include stolens and branded registrations like Salvage and Total Loss. In fact, Canadian Total Loss data is included in the Carfax Buyback Guarantee, so you can be sure the Canadian vehicle you are interested in has not been totaled." Again - you will have to make your own decision about whether the CarProof report's Canadian information is NOT present on other company's reports and if it is of sufficient additional value to you.
Carfax Home Page - Carfax, the leader in vehicle history reporting, delivers guaranteed reports
Carfax has been around for many years and is the best known of the Used Car History sites. Most attractive is their unlimited report that allows you to request as many reports as you like within 30 days of requesting the first report. The site also has a good help function and some worthwhile extras to help the used car shopper.
The unlimited reports are $24.99 US and a single report is $19.99 US. The Safe Teen Driver Program section is good and Carfax supplies sample reports so you can see just what you are getting.
Not sure if the site lacks Canadian data (as its competitor CarProof asserts). I would suggest that you compare sample reports from both companies and see what you think.
Automobile Inspections, LLC
Note that this site is not for car buyers who are purchasing an 'everyday' used vehicle. This is for those buying a collector or exotic car.
Automobile Inspections' reports consist of "six jam-packed pages asking over 150 crucial questions that give you the facts you need to know." Reports may also include a Carfax vehicle history check (available on the Red report only - for cars built later than 1981 - for an additional $30) and can also include photographs of the car for an additional $30. Reports are certainly not cheap however at $299 for the Red Report, $379 for the Blue Report (1946-80) and $399 for the Gold Report (1945 and earlier). There is also a new report called the Silver Report which is $399 and intended for street rods and modified vehicles.
Tons of information that may be crucial to purchasers of collectable or exotic cars.
These reports are expensive but as mentioned above may be essential for people spending tens of thousands of dollars on very special vehicles. There is a 72 hour delivery period for these reports (versus instantaneous with standard history reports) but this is not really very suprising given that these cars must be examined by a human (gasp) to produce the report.