I need advise on the best, & cost effective way to ship a package to my daughter who's in the army in Qatar? ?

Ditto again on Redleg's answer - he is beating me on responding.

Do not ship anything other than USPS, as the private mail companies do not ship to APO boxes.

When you ship to APO AE, you are only paying for postage to New York - where all the APO AE goes to (APO AP goes to San Francisco; APO AA goes to Miami). The DoD picks up the shipping from there to whereever it actually goes to. Shipping regular mail si most ocst effective, usually using the the flat rate boxes.

USPS...you will only pay shipping to the APO..which is on the east coast,. The military will ship it from there.

the ONLY option is USPS. most cost effective are the flat rate boxes