hard to come by
- rareSeldom found or seen
- scarceIn short supply
- elusiveHard to find
- preciousHighly esteemed, greatly valued
- sought-afterMuch wanted by many
treasure · unicorn · needle · haystack · limited · exclusive · coveted · prized · uncommon · difficult · hunting · searching · shortage · scarcity · gold · diamond · waiting · patience
availability/accessibility
hard to come byeasy to find
accessible · a dime a dozen · abundant · plentiful · within reach
commonness/frequency
hard to come bycommonplace
Unremarkable and frequent
common · ubiquitous · everywhere · ordinary · widespread