Guess at a shipment method here and make sure that you re-examine your choice when checking out.
If you expect the order to very small, First Class mail will be least expensive and take about a week.
If you expect the order to be less than 2#, Priority mail will be less expensive than UPS and arrive in about 3 days.
Orders over 2# or over $40 are usually less expensive to ship UPS.
International orders are much less expensive to ship Air Mail but take longer than UPS.