It gets great reviews, is quiet at 1 sone compared to some that are 2.3 or higher, can be safely installed over a shower (as long as on GFCI circuit) and was in stock locally. I find the quieter the fan, the more likely someone is to actually use it so it's worth the extra cost in my mind.
Applied the VIP20 coupon and also used eBates for an extra 3% off. Much cheaper than anywhere else I've seen it. Thanks OP!