For today only, this WD Elements 1TB Portable Hard Drive drops from $149.98 to $104.99 to $34.99 with a mail-in rebate at Tiger Direct. As a bonus, get a copy of Total Defense Premium Internet Security Bundle, originally $49.99, for free with your purchase. Shipping adds $3.92, but without adding the value of the software, this is still the best deal on this portable hard drive by $25. This HDD uses USB 3.0 and is compatible with Macs and PCs. The Internet Security software is only compatible with PCs and can be installed on tablets and smartphones, as well. There is no sales tax (except FL, IL, NC, TX, GA, SD and ID).