Ah, that's probably what the author meant to say. As written ("She was being sued by the dating website for not paying the fee of a bit more than $800."), it says the fee was $800.
Maybe $800 is the "non-discount" amount. If you follow whatever terms, you get the discount. If you don't follow the terms (like, not paying), they charge you the non-discount.
That sounds probable given their other business practices. Sticking those who complain with a much higher fee would cover the cost of keeping a lawyer/legal standover man around.
