Do you offer a realtime spotprice api? (read only is fine) or know of any?

I am currently coding up a site to display all of my bitcoin addresses, their amount and thus their $ value.

I use the blockchain.info api to discover amount of bitcoin for each address and have a method for fetching the latest spotprice from either the coinbase or bitstamp apis;

bitstamp has a fixed maximum request to 1 per minute, I looked for coinbases limit but they do not mention it and AFAIK they get their prices from bitstamp.