On 5/13/2016 9:55 AM, Mark Lloyd wrote:
I have a 3-handset cordless phone that allows up to 10 handsets. I looked on
the internet for extra handsets and they cost so much I was better off buying
another system (and that comes with an extra base, too).

I think the reasoning is that:
- not many people (relatively speaking) want extra bases (so, quantities
are lower, shelf space gets wasted on products with low turnover, etc.)
- people who want more, can *afford* to pay more (for the convenience
of having interchangeable handsets)

Be careful running multiple bases concurrently. Some may not like this.