If there was 0 fee then I can see you not worrying about it at all, but since this is one of the few pools that charges a fee it should be a premium service?
I know this is sort of beside the point, but I contest this. The only big pools that don't charge a fee are Eligius (wizkid has a working relationship with a datacentre) and GHash.IO (makes their money from CEX.IO).
In the past, BTC mining pools that don't charge a fee have changed to fee charging or have failed. If you're not paying for the service in BTC, then you need to make sure you're not paying for it some other way.