Get the latest prices of many tokens with no cache

Hi, I need a query that returns only the prices of some tokens. The count may come to around 100. I dont need extra information just name, price, unit and timestamp.
I have found some are created but the prices wont change at the second call. after a while they are changing. using caches? Is it possbile to get real current price same as on the poocoin?

We do have a delay in our system, you can check it here

Also can you show us your query which you are trying.