Sci Fi Saturday: Beggars Can't be Choosers

"I can't afford that one," she said, and sighed.
"It's from our budget line; we haven't got
A lower price point." That shop girl, all pride
And condescension, obviously thought
Their interaction ended. Rosie, though,
Her stump still itching, wouldn't pass one day
Without an arm! "Come on. If you'd just go
Check out the stock room --" she began to say.
"I did already. All we have back there
Are custom jobs." "Did any get returned
Or not picked up?" The shop girl smirked. "You care
If it's got limitations? We got burned --"
"I'll take it. Graft it on this instant, please."
And that's why Maddy's hand can just slice cheese.