Not at all. MRI machines have huge start up costs but that doesn't mean they cost any less to run because making and storing liquid helium is orders of magnitude more expensive than liquid nitrogen. According to [1], for a new MRI from the manufacturer, it costs about $2 million for startup costs (capex and training) and another $2.5 million over the next 5 years for operating costs. Considering these things easily last 20-30 or more years the lifetime cost of an MRI will be an order of magnitude greater than the acquisition cost. Don't know how accurate this document is but it fits my experience of about $1 mil start up with $0.5-1 million per year operating costs.
[1] http://proimagingservices.com/wp-content/uploads/2014/10/How...