Shovel racers suggested reply:
My official response would be that the pour is not needed when the base is installed properly, and by doing so is a waste of money. Sure it has benefits, but when the slab cracks or heaves the patio will be much more expensive to fix. We plan on installing to industry standards or beyond and we back it with our 5 year guarantee, but really if you ever have base issues please just let me know and I'll have it taken care of... Is the other company offering to jack hammer out and repour the concrete base if there is an issue down the road?[/QUOTE]
I like shovel racer's suggested reply.
I assume there is a large price difference in the two quotes. Since this is your customer, any reason why you dont want to quote it both ways. If you are not experienced in installing concrete slabs, get a sub to quote it, and you can let your customer choose the install method he wants