Many cryptocurrency users believe that it is beneficial to use satoshi instead of whole bitcoins as units of account. You can say: I bought 0.0001 bitcoin. Or you can say that I bought 10,000 satoshi. Perhaps it will be more convenient for all of us to use Satoshi as a means of calculation.
But it all depends on the purpose and further use. Also, the question of the price of 1 bitcoin and 1 satoshi is a different price.
A few years ago, Bitcoin was worth several hundred dollars. 1 BTC was the main unit of account for mining, investments, transactions when buying goods and services.
Now the cost of bitcoin is much higher and I cannot buy bitcoin at that price. It's more profitable for me to buy satoshi.
it is easy to do through online exchangers. You can choose favorable conditions for buying and exchanging satoshi to usd through the BestChange service here https://www.bestchange.com/converter/
BestChange monitors exchange rates in several hundred reliable exchangers and equips you with all the information you need to select the best exchanger to transfer your money.