Bag of Better Holding

The Bag of Better Holding is a simple dark purple velvet bag of holding with an opening of roughly 8 inches.

It operates like any other bag of holding but gives the holder the chance to pull out something better than what they put in.

On a D20 roll of 11 or higher, the intended item is pulled out at a higher value. The closer to 20 the more it is worth (i.e. a silver bracelet worth 2gp comes out as gold, and worth 5gp)

But on a d20 roll of 10 or lower, the intended item is pulled out at a lower value. The closer to 1 the less its worth.