Answer:
specialty
Step-by-step explanation:
Specialty goods are goods with unique characteristics and brand identifications that will motivate a buyer to go to great length or special effort to acquire such a good. Specialty goods require high involvement as the buyer can show high level of brand loyalty to a product and pay a premium just to acquire the brand.
Byron does not visit another store to compare other vases because he already knows the unique characteristics he is looking for which he found in the first vase that he saw and bought. So he purchased a specialty good.