Synonyms of collectible

1 Syllable
owed, duer, rare, dear, rich
2 Syllables
prized, curio, costly, valued, debit
3 Syllables
out-of-bounds, treasured, valuable, priceless, cherished, out-of-sight
4 Syllables
invaluable, expensive, receivable
5 Syllables
incomparable, inestimable, incalculable