Cases from cite.case.law:

In RORIE,, 98 B.R. 215 (Bankr. E.D. Pa. 1989)

. . . incurred of $969.05; post-judgment escrow payments incurred total-ling $967.46; and late charges of $520.79 . . . computed as follows: unpaid principal balance $6,016.83 interest to 4/30/88 $2,331.12 late charges $ 520.79 . . .

MITCHELL v. SECURITY INVESTMENT CORPORATION OF PALM BEACHES,, 464 F. Supp. 650 (S.D. Fla. 1979)

. . . addition to Federal statutory problems, the 15% interest rate appears to violate Florida Statute, Sec. 520.79 . . .