Because they're awesome...
I've been wanting one for a while but I don't want to pay more than $40. So I do a lot of watching. If it was worth another 10-20 to me I could find one. Have you looked at the Slim? Same thing but different handle. Can usually be found for a smidge less.
Someday I'll find one at a thrift store or antique store for $20 and it will be an awesome day. At least that's my plan.