Here's the HF link with the coupon code. Seems like a decent deal if it fits your needs.
I always get the extended warranty when buying power equipment from HF. Seems like cheap insurance, but I've had good luck with the few things I've bought.
It all depends on your needs, but that's a good value. A Honda inverter that size will be whisper quiet and use half the fuel, but it will cost at least 5 times as much.