This course is limited to 12 people and costs $150.

这门课程限招12人，费用为$150。

《柯林斯英汉双解大词典》

The reason, of course, is that costs have rocketed and ticket prices have stayed low.

原因当然是成本飞涨，而票价一直保持在低位。

youdao

Of course the costs will vary across people and across temptations, but that seems to be a consistent finding.

当然，这种成本因人而异，也因吸引力的不同而有所差异，但这似乎是个一致的发现。

youdao

It is vast,it costs an enormous amount of money, but of course it is funded from taxation and the contribution made by patients."

VOA: standard.2009.09.24

"We needed to look at all the avenues to reduce our costs and the number one, of course,is our rent,and I asked the landlord to help me out, which they agreed,"

VOA: standard.2009.12.20

Course costs vary with the length and intensity of the programs.

CNN: Costs vary with length, location

And of course total costs are what really interests people, not solely labour costs.

FORBES: Reshoring, Onshoring: the Opposite of Offshoring Anyway

But, of course, costs are rising with inflation while the demand for some services is also increasingly rising.

BBC: Councils setting out budget plans