hefty, high
The company is charging a pretty hefty premium for access to their network.

small
additional, extra
price

pay
Electricity companies pay a premium for renewable energy.

charge
place, put
command
collect, earn, receive

at a premium
Good hotels are at a premium (= difficult to obtain and therefore expensive).

premium of
bought at a premium of 40% above the current market price

premium on
The company places a high premium on customer loyalty.

annual, monthly, regular (esp. BrE)
high, low, small
Intense competition has kept premiums low.

insurance
risk
There's a risk premium of probably $10 a barrel built into oil prices.

equity
equity risk premiums

health-care (esp. AmE), health-insurance
malpractice (esp. AmE)
the rising cost of medical malpractice insurance premiums

pay
afford
keep up
We're struggling to keep up our premiums.

increase, raise
The insurance company has increased our premiums.

cut, lower, reduce

go up, increase, rise
My insurance premiums increase each year.

fall, go down
cost sth
The additional premium costs $1 800 a year.

payment, rate
increase

premium for
the premiums for your pension plan

premium on
Premiums on many cars will go up this year.