choombakJust like with any product that will have many similar prices across the web, it comes down to the vendor, community, customer service, sales tax, etc.
And speaking of taxes...they are a localized personal matter. Jomashop is NYC based outfit, so New York residents will have just as much reason to buy from MD as you would from Joma.
About $195, free shipping, no tax. Why should I buy here?