This set of 5 Tea Infusers from Free Walker via Amazon.com drops 40% from $16.99 to $10.19 when you enter the code V2R4W7A8 at checkout. This breaks down to $2.03 per infuser. Similar infusers are selling for $3-$4 a piece. Shipping is free when you use a Prime account or free Prime trial. Shipping is also free when you spend $25 or more. Otherwise it adds $5.99. The BPA-free silicone infusers can be used for loose tea. Sales tax is charged in most states.