Well, I hate to disagree....but....
unlike the above brokers, I think you'll find the best options (and better advice) at
https://www.bestquotetravelinsurance.ca/super-visa-insurance-bestquote-rates
The GMS plan is not the greatest coverage. Yes, sometimes it is the cheapest way to get a policy that covers 'stable pre-existing medical conditions'. BUT, they just went through a major price increase on march 1st 2015 - so unless you want to use a policy with a $1000 deductible, they will often not be the cheapest plan. That's #1.
#2: They have a long list of health issues that can mean that you are not eligible for coverage (in last 12 months) ((AIDS); terminal illness; atrial flutter; atrial/ventricular fibrillation; peripheral vascular disease; stroke/transient ischemic attack; blood clot(s); congestive heart failure; gastrointestinal bleeding; and/or kidney/liver failure; or
b. you have undergone renal dialysis, valve replacement or organ transplant;
c. you are awaiting further tests or medical treatment for heart disease;
d. you require insulin to treat diabetes and also take prescription medication for heart disease;
e. you have any medical condition necessitating the use of home oxygen;
f. you take oral steroids for a lung condition;
g. you have been diagnosed with metastatic cancer;
h. you are under active medical treatment for cancer;
i. have a vascular aneurysm that remains surgically untreated;
j. have experienced undiagnosed episodes of fainting or falling (syncope);
k. you have an Implantable Cardioverter Defibrillator (ICD); or
#3 the benefit levels that they offer are less than those of other plans. For a policy that covers 'stable pre-existing medical conditions' the GMS plan is one of the lightest plans in regards to the benefits they offer.
#4 The coverage is only available within Canada, the US and Mexico. No side trips to other countries are covered.
#5 GMS is not available if the person is going to stay in (and use as their Canadian address) Quebec or NB.
#6 the GMS policy requires conditions to be stable for 180 days prior to the policy starting. Some other plans have a shorter stability period (120 days).
So, it's not as simple as these other brokers would have you believe. They give you an answer like "Hey, it's great, you can buy it here (link)." And that's it? If you want real advice, and a better selection of policies, go to
https://www.bestquotetravelinsurance.ca/parent-and-grandparent-super-visa-health-insurance
Whatever policies you can find on Arbetov's site, you can find at BestQuote too - but BestQuote has more policies to choose from, and won't just sell you a policy - they'll help you find the best choice.
