Your eCPM is $78.26 and your asking is it good. Not sure how much you want to make, but $78.26 is extremely good. Prob will not last though as it's only on a few impressions meaning that the more accurate results of any testing is normally done on thousands or even hundreds of thousands of page impressions.
It took me 78 to make 1.80 the first time I ever played with adsense....so good for you! You will see more success than myself in 1/3 the time lol.