Ran the current tb-500 listings across 23 vendors (33 offers total).
Range right now: $16 to $220, median around $69. (~$6.6/mg)
Cheapest right now is labpeptides.org at $16 for 2mg. Cheapest to priciest is about a 13.8x gap — that's why price-per-mg matters more than the sticker price.
Anyone seeing better numbers recently? Post what you're seeing and I'll keep the tracker updated.