premium /prēˈmi-əm/

1. A sum regularly payable for insurance
2. An admission fee paid by someone entering an apprenticeship or profession
3. A sum added to a fixed wage, rate, etc, a bonus
4. Excess over original price or par, opp to discount
5. Anything offered as an incentive to buy
6. A reward, prize or bounty

Of highest quality, and so costly

• damselfishes
• damselflies
• damselfly
• copper-captains
• coppered
• copper-faced
• copper-fasten
• copper-fastened
• copper-fastening
• copper-fastens
• copper-glance
• copperhead
• copperheads
• coppering
• copperings
• copperish
• copper-nickel
• copper-nickels
• copper nose
• copper noses
• copperplate
• copperplates
• copper pyrites
• coppers
• copperskin