eBay with electronic_ express has the TaoTronics Rechargeable 12" Floor Fan w/ 17850 mAh Battery on sale for $70 - 20% off with coupon code JULYSAVINGS [Exp 7/6] = $56 with free shipping.

22 hour runtime on full charge, includes LED battery life indicator, delivers 1700 CFM max airflow w/ variable speed control, 220° pivoting fan head.