I am programming price bot for USD to TRY, you can find 2 pieces script in the zip file in the last sentence. With this bot, you can get doviz . com dollars data, and publish in your website or integrate it.
Core system is 2 pieces, and you don't need to change something on it, you need to install curl to your system. But if main site change source, bot will be stop working. When i have a time, i will update.
There is code, and you can install it from there.