The phrase "about whether to spend" is correct and usable in written English.
It can be used when discussing a decision-making process regarding expenditures or investments.
Example: "We had a long discussion about whether to spend our budget on new equipment or training for our staff."
Alternatives: "regarding the decision to spend" or "concerning whether to allocate funds".
4/5 5. St Helena Britain's second-oldest colony is fiendish to reach, and debate has raged about whether to spend £250m building an airport.
We haven't had to make decisions about whether to spend thousands of dollars, possibly tens of thousands, to save or extend their lives.
It said local authorities would continue to have total discretion about whether to spend any of the education services grant they received on providing music services.
Students make their own decisions about whether to spend their optional time studying or socializing, the latter of which some school administrators tend to frown on.
Fears of war and more company bankruptcies and general economic malaise have people concerned about whether to spend money on shopping, she said.
"That one-quarter of these foundations are undecided about whether to spend down or exist in perpetuity tells you, I think, that there is more thought being put into this issue right now".
One customer, she said, stood at her counter for about 10 minutes weighing whether to spend $18.50 or $35 on one present.
You also learn about priorities, like whether to spend four pesos on an empanada or splurge on steak frites for 15.
ESA was supposed to decide in June whether to spend about $1 billion on IXO, the Europa-Jupiter mission known as EJSM-Laplace, or a space-based gravitational-wave detector called LISA.
Often the challenges to this involve disagreements about whether or how to spend public money on knowledge-building, and whether or how to let the resulting knowledge guide policy.
And deciding how to finance your wedding will be just one of them, whether it's about how to spend the money you've been given or how to spend your own money for the big day.
