$75K is merely the minimum in damages required to sue in Federal Court; see page 2 of their complaint, #3: "This action involves a dispute between citizens of d

$75K is merely the minimum in damages required to sue in Federal Court; see page 2 of their complaint, #3: "This action involves a dispute between citizens of different states and the amount in controversy is in excess of $75,000. Accordingly this Court's jurisdiction is invoked under 28 USC § 1332...." See e.g. https://www.law.cornell.edu/uscode/text/28/1332# https://www.law.cornell.edu/uscode/text/28/1332# for that bit of law, this is what's required to literally make it a Federal case. We can be quite sure they'll be asking for more in due course, if the case gets anywhere (it takes some effort e.g. $$ to lawyers to establish specific damages to a court's satisfaction).