<human>: Could you distill the essence of the text into 1-3 sentences?

Was shopping with my three year old daughter at Large Home Improvement Warehouse Store to pick up a quick item.  We were just entering the self-checkout, when my daughter and mine's conversation was rudely interrupted by a solar power vender.

"Sir! Excuse me! Sir!" I attempted to ignore her, but there weren't enough people around to pretend she was talking to somebody else.  "Yes, what is it?"

"Is your electric bill ever over $100/month?"

"Nope, never."  

Her look of disbelief was matched by her incredulous tone. "Yeah, right.  Sure it is."

Now at this point I was distracted by the simultaneous effort of trying to check out and carrying on the conversation with my daughter, that I was merely trying to deflect the sales bitch long enough to get out of there. But something in her tone made me take a pause.  I turned to face her, giving her all my attention.

"Actually, my bill averages around $55 per month.  You see, we recently converted our household lighting to LED, and that made a solar conversion impractical."

At this point, the store was becoming busier, and some other potential targets walked by her table.  She immediately adopted a dismissive tone.  "That's great, sir. Thank you." As she turned away from me to talk to other customers, I persisted.

"When I ran a cost comparison…" A few more customers walked by. "That's great, sir. Thank you."

"Solar would cost almost twice as much…"  And a few more lost sales. "That's great, sir. Thank you."

"So my family decided LED conversion was a much better…"  Yet a few more lost sales. "That's great, sir. Thank you."

We carried on like this for another few minutes until my daughter had had enough.  Hopefully she lost at least one commission!
<bot>: Take my valuable time to try and sell me something I don't need? Let's take some of your valuable time and deny you some potential sales.