Decide what type of clothing you want to wear. Samba gear boasts a large variety of both long sleeve and short sleeve tops available for men and women. For parades and dance competitions, choose appropriate gear based on the event. The website, Samba Collection has a large variety on exercise type clothes and parade clothes.
Shop second hand consignment stores to find Samba gear at a discount.
Shop online for Samba gear. The website, Belly Dance Gear has a nice Samba gear collection.
Shop at garage sales and thrift stores to find Samba gear. Look for yoga pants, tank tops and anything that looks "costumey."
Ask for recommendations on dance discussion forums for information on where others buy their Samba dance gear.
Shop at dance clothing stores. Specifically at those that carry ethnic dance gear.