There are many words that can match ecstatic, basically anything that means happy because ecstatic is just very happy, so words like joy, excitement, happiness, joyful, many words that have similar meanings, but I would need the part of the story if I needed to directly point out signal words for ecstatic.
Answer:
Cheap implies low quality items resulting in lower price. Inexpensise means a quality item at a lower price.
The narcissus myth found in the prologue of the alchemist is a metaphor that suggests that a person sometimes needs to be self-focused, worry a little bit more about oneself, follow his/her own path to succeed in life, because this characteristic could connect you more to nature and to the spiritual world.