For Starsan, here in Korea it's about $16 for 8oz and $105 for a gallon. If you spray on the starsan that'd go a long way, I guess I'm just used to completely inundating everything in sanitizer (i.e. filling up the carboy to the rim in dilute bleach) which is cheap with bleach but painful with starsan.
We're veering way off topic here, but the point of StarSan is that you reuse it extensively. As long as the pH is in range (<3 I think? Can't recall for sure) I'll make a 4-gal batch of sanitizer (takes <1 oz, so ~$2), and will use it for months and months. Dump it into the carboy, dump it back out into the storage bucket. Soak your racking cane, rack it back into the storage bucket. You'll get consistent results without worrying about whether you under- or over-diluted the bleach.
To each his own of course, but I just wanted to emphasize that, given the way you can use the stuff, even Korea prices don't make it an expensive sanitizer.
Anyway, coming somewhat closer to the topic, I had a similar though less extreme experience to you. I started brewing in '01 and through 2004 was deeply immersed in it. Then I mostly stopped (would make 1-2 batches or so a year, and wasn't reading anything new), till I jumped back in with both feet in 2011, and saw all the changes, like the no-secondary, not sweating HSA, etc. It was eye-opening for me too!