I think I am already past the $2,500 mark in ships. Between the Hulls and the fleet and assorted extras, I think I did pass that mark.

Vanguard,Retaliator,Redeemer,Reclaimer,3 Constellations,Orion,All Auroras,All 300 Series,All Commercial Hornets, All Hulls, Star G, Endeavor Master Set