ethereum-api | An open-source ethereum classic api for everyone | REST library

Ok you don't see the answer like a normal result in Remix:

You have to go under settings and open the Oraclize plug in.

If you then deploy the contract and or click update, you get the result shown in the plug in.

I'm not sure if I can address you design questions as it seems more like a business problem than a coding/design issue (or I may not be understanding the question). If getToken is your point of sale and you want to reject any requests when the exchange rate is too low, then just make that a condition you check with a require statement. However, I will note that from the technical standpoint, you can't read events in a Solidity contract. You can only listen for them in a client which will receive the event(s) when the transaction is successfully mined.

I can, however, address your IDE issues. The reason for the failures is oraclizeAPI is dependent on already deployed contracts. They have a modifier which sets up the internal network of the contract depending on which environment it's running: