I've been near, or flat broke many a time due to expenses by barbs in raging barbs whilst going wide; and it is that IF you can scrape up SOME coin per turn, there is a formula that determines the FRACTION of 'full turn' science output : close (-1 to -10), gets about 7/8ths Spt, near (-11 to -15), 3/4 Spt, beggered (-16 to -20), 1/2 to 1/4 Spt, buggered (-20 to -30) yields single diget Spt; and FLAT BROKE (-31+) = zero Spt .
TRs help to defray costs, but when they are pillaged/captured/destroyed, your cash-flow gets gut-shot . Undefended Luxuries are just SOOOO tempting to pillage, and are equally painful to the Treasury .