"This stuff is priceless, because in the past, you had to pay thousands of dollars to get these same tests"
You still have to pay thousands of dollars if you need the results for actual medical purposes. 23andme only tests for a few of the common SNPs that can cause each disease, but the testing isn't as comprehensive as what you'd get from a doctor.
Actually there is a startup called Counsyl that tests for about 1000 of those genetic diseases for about $350. I think you have to get it through a doctor though.
You still have to pay thousands of dollars if you need the results for actual medical purposes. 23andme only tests for a few of the common SNPs that can cause each disease, but the testing isn't as comprehensive as what you'd get from a doctor.