How can I select current price of cryptocurrency? Get an coin with ID from API (CoinGecko API)

I am not sure how am I able to select current price of coin when I get response like this:

So in this case I have accesed to a current price of bitcoin like this:

getCoin() {
return this.cryptoAPIService.getCoinById(this.id).subscribe(res => {
console.log(res);
this.currentPrice = this.numberWithCommas(res[22].current_price.usd);
});


but when I click on ETHEREUM, response look like this:



now I get the error because I have to select current price of ethereum like this: res[23].current_price.usd. Some of them have current price on index of 24, so I am not sure how am I able to select the current price of all of them with one function, any suggestions?

EDIT:

getCoinById(id: any) {
return this.http.get("https://api.coingecko.com/api/v3/coins/"+id).
pipe(
map(data => Object.keys(data).map(k => data[k]))
);
}

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