(1) The 8-Q filing incurred all sorts of extra review costs that were different from the typical once-over-lightly and small fee.
(2) The 8-Q filing incurred all sorts of extra review costs, not the typical once-over lightly and small fee.
(3) The 8-Q filing incurred all sorts of extra review costs – far from the typical once-over lightly and small fee.
Version (1) is standard fare, not the stylishness of a negative appositive. Version (2) shows a negative appositive that defines “filing,” whereas (3) makes a more general comparison. Note that the comma in (2) creates a milder effect than the dash in (3).