BoH went from a 25,000gp item in 1e to a mere Uncommon item in 5e - Bag of Holding - base price 500gp (DMG) or 200 gp craft 400gp sale (XGTE).@tetrasodium
Second, a Bag of Holding - the single most useful item in the whole damn game and by far the most in demand by any adventurer anywhere with even a shred of wisdom, hence hella expensive and hard to get