Crazy. As you can't increase your rates by a part of a dollar, you'd have to put them up by one whole dollar.. Which would be unfair to the guest, as no-one would use a whole dollar's worth of shampoo a day.. But if you don't charge, YOU lose out.
A couple of years ago Airbnb were telling all hosts to provide toiletries, linens, towels, TP, and it backfired, with mass protest from hosts who did not want to, or found the logistics difficult cos they managed remotely. Airbnb backed off, & rescinded then.
I DO provide shampoo & I buy whatever is cheapest when I shop, usually 500mls for £0.99. It can last a year, some use it, some don't. Not always the same brand. Will I have to update my listing every time I buy a new bottle of shampoo?