Dear friend if you were located in Europe you could find many decent basses in affordable prices, either new or used. However the shipping costs from Europe to the States make such an attempt less than attractive. In any case if you want any detailed infos about European luthiers, factories or shops specialized in double basse please gimme a shout and i'll send you everything available after a thorough research of this market for two decades.
Mike
Thomann.de offers basses from European makers (Czech republic, Romania, etc) and their shipping costs to the US are laughable (just checked: 34 $ shipping to US).
As said above: be patient or/and buy used.