I have only had to get a replacement parts from Revell one time so it's hard to say what is normal. I used their on line request and provided the codes from the kit box and the part number, explained the problem on the provided comment box. Within 72 hours I had an E-mail conformation and the new body arrived within a week. So for my personal experience this one time I was very happy with their response. One thing I either read here or else where was that these parts are removed from old stock in the where house that was set aside a long ago. In my mind that would require a great deal of time in some cases looking thru cannibalized kits looking for parts. So depending on the replacement parts requests the turnaround time would be different at different times.