Name your number first
Say a specific price, lower than you expect to pay. The talk then happens around your number, not theirs.
When it works
Markets and private sales, where the asking price is only a starting point.
What to say
“Would you take 200 for it?”
The mistake to avoid
A number so low it is an insult, or no number at all, just "cheaper".
Practise it
Try this move on today's made-up shopkeeper in Bargle. Two minutes, free.
Play today's haggle