Iherb.com has the NuNaturals NuStevia White Stevia Powder, 1000-Count Box - 1 gram packet sugar substitute for $52.86 including free shipping.
There are several $10.00 off first time customer coupons available on a google search reducing the price to $42.86. If you have been their customer previously, I still see some $6.00 off coupons available on Google search. I have not seen that reasonable a price for this item in a very long time. Prices elsewhere seem to be as high as $86.00 + shipping on eBay. Amazon appears to have it for about $66.00.
Just be sure what you are ordering - There is a variation of this product that has half as much product per packet for similar prices.
I have tried to avoid links benefiting third parties per FW guidelines. In doing so, I am providing a direct link to the product on the IHerb.com website only.