There are several places to purchase a Sharp air purifier in the country, including online retailers and brick-and-mortar stores. When buying from an online store, be sure it is reputable and has good customer service. You should also check reviews from previous buyers before making your purchase.
Major departmental stores like Harvey Norman and electrical shops like Senheng & Courts often offer affordable prices for their products too! It's best to visit these retail outlets first hand if time permits so you can look at what they have available before making your final decision.