In retail pricing strategy, which psychological pricing tactic is known to create an illusion that products are significantly cheaper than they actually are?

Pricing strategy is a critical component of retail marketing that directly impacts consumer behavior and sales. One particularly fascinating aspect is psychological pricing, where specific price points are chosen to create a particular impression or trigger certain purchasing behaviors. Test your knowledge about one of the most widely used psychological pricing tactics that has been proven to influence consumer perception and purchase decisions across global markets.

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Charm pricing (prices ending in 9, like $19.99 instead of $20)
Bundle pricing (offering multiple products for a single price)
Prestige pricing (deliberately keeping prices high to suggest quality)
BOGOF pricing (buy-one-get-one-free offers)