Mark, my question is when I read your process for cleaning a bad stain on the kitchen carpet. Is the fiber max pad included with the start up package? Another question how many different pads are used on the challenger? Are they all included? and if not are they very expensive? Just interested.

I include a Fiber-Plus pad in the package for scrubbing stains of this type. The Fiber-max pad is more aggressive, and I try to use it sparingly. If you do decide to buy a Challenger or a Package, I can tell you where to go to buy it.
Challenger sells a Tile & Grout brush attachment for $35, which will allow you to also sell services in tile & grout cleaning. I also (in my own business) use some pads specifically designed for honing & polishing such natural stone floors as marble, travertine, limestone, terrazzo, etc. These pads are indeed pricey, but since you can sell marble refinishing services for around $4 - $5 per sq. ft., they quickly pay for themselves. You can also buy very inexpensively what is called a maroon pad for abrading wood floor finishes, allowing you then to offer wood floor recoating services. With the Black Magic pad from Virginia Abrasives, you will also be able to condition super-hard aluminum oxide floor finishes prior to recoating.