We have a bunch of kettles calling the pot black for sure regarding "bad" influences around here.
Maybe this is the root of my problem, but stock availability for allot of the early 2000s-2009 stuff is gone or disappearing quick, even the not so popular titles. Even though it's a niche market, it's still growing with the popularity of the universal Oppo players/etc. Obviously as the demand grows, the gap between supply and demand will grow, and the end result is climbing prices...feels a bit like a "rush" to get them while you can.
My approach is look for the deals on music I know I like or is recommended with a probability I will like the material vs. searching for a specific target (good thread/folks here to help with that). This approach has allowed me to build a decent library without overpaying. Yes, I have a few titles I've heard only once, but it's good to know they are there. There are a few cases where I chose to bite the bullet (+$50, not counting SHM-SACDs), but those are <10.
I got in the Hi-Res game in 07, so luckily I picked up some of the really pricey hard to find stuff shortly before stock disappeared (i.e. Avalon, Sea Change, BJ - The Stranger, Boston, Journey, Brain Salad Surgery, Satriani, Jeff Beck, Tubular Bells, Oasis, Nicklecreek, PG - Shaking the Tree). Funny thing is price is not an indicator of sound quality (Boston, Journey, Oasis, Shaking the Tree), but more about supply and damand.