Yes, B5 wasn't a comparatively big-budget operation. IIRC, B5 had about $800K per episode, while STS9 had about $1.6 million.
That bieng said, some of you folks are snobs.
I still recommend Blake's 7. One of the all-time best shows.
That said, complaining about US TV shows compared to 70s BBC budgets ... HA!