Lowe's has the Optimus Utility Electric Space Heater with Thermostat (model H-3013) for just $13.96
Save even more with promo code, mover's coupon, or military discount.
Portable and durable utility heater with heavy gauge metal cabinet will warm your space with 2 heat settings
Unit has a convenient carrying handle
This unit has a built in overheat protection circuit and tip over safety switch for additional safety
Compare to Amazon at $26.13 (ships from and sold by Amazon.com)
Also at Home Depot for $26.13
Reviews are pretty iffy, with a 68% recommendation rate. But at this price, it's worth considering (IMO).