General Pokémon Card Market Chart

Hey guys, I’m wondering if there is a suitable Pokémon card market chart/linegraph that can show the general status of the current card market.
I’ve been using psa 9 base set unlimited alakazam as a gauge, but I’m wondering if anyone knows about anything more reliable?

There’s no one magic indicator of “the market.” But if you want to keep track, follow this thread and post your market-related questions there: www.elitefourum.com/t/the-giant-english-market-thread/27424/1