For purchasing a soldering iron online, recommended stores include Digikey and Jameco, offering basic to moderately advanced models. Prices can start as low as $10, with suggestions for units that include a stand and sponge holder. Safety is emphasized, particularly regarding solder smoke, which can be harmful to health; using a fan or exhaust hood is advised. Lead-free solder options are available, and precautions should be taken to avoid inhaling fumes. Overall, local electronics stores like Radio Shack may provide convenient alternatives without shipping costs.