Technological improvements have dramatically lowered the cost of reading all your DNA, though most people still don’t have an incentive to have it done.
It cost $2.7 billion to sequence the first human genome, which was completed in 2003. But even then scientists talked about it someday being possible to do it for $1,000, since that could make it practical to read out all your DNA for some routine medical care, the way MRI or CT scans are used now.