Any commercial litigation lawyer can do it, as could most lawyers. However, you should go with an attorney that suits the purpose of the power of attorney you want. Are you wanting a healthcare power of attorney, a financial power of attorney, a limited financial power of attorney? There are numerous kinds of powers of attorney, some time limited and some with limited powers. Since your question is very vague, I doubt you have the knowledge to just get some form and hope it is appropriate to your needs. If you want a financial power of attorney, probably a Wills & Estates lawyer would be the better attorney. If a general power of attorney, any commercial litigation attorney would do. However, a large firm is likely to have several forms on hand and each can be modified to fit your needs so, with this information, you should be able to make a good choice.
Bad news for you: those are the affordable attorneys.
You need to come up with that amount as a retainer and have them bill their hourly rate against it. If there's anything left, you get it back.
But at those prices, that's about 10 hours of work. Even a misdemeanor case can chew up that time before it's over.