I got a step bit off eBay for $6.00. May not be the quality of the one at sears, but my UDS didn't know the difference. Buy the cheap one, it will work well for a while if you like it, then go with the $40 one at sears.
Crankin out Q on my ECB since 2005
UDS born September, 2007
22" Weber Kettle
18" Weber Kettle