It makes people subconsciously think it's a dolar less, so if you have a $1.99 game, it will feel to the buyer as $1.00 due to the first digit being one.
Yes, I know that...
The question is what is more effective, using that technique or trying to have a closer relationship with the buyer?
That is the idea of the topic.
Yes, this will definitely build a better relationship with the buyer and I recommend using it.