Synonyms for Purchasable (same or very similar meaning)
WordNet sense 1 (capable of being corrupted):
corruptible, dishonest, venal, bribableWordNet sense 2 (lacking in integrity):
corruptWordNet sense 3 (available for purchase):
for saleWordNet sense 4 (obtainable or accessible and ready for use or service):
availableFrom the ODE community, based on WordNetadd/edit