"10 days of offers top premium apps 10 cent per app" in android app stores

Since two days ago which mean Dec 6, Google offers 10 apps everyday for 10 days for 10 cents. I bought at least 6 apps everyday. Even the app the I don't use or I don't think it is useful. I been thinking it is good that i do that or not. For once, I think it is very cheap for some app like the app offer today such as Tetris that usual price is 3.99 but for today it is 10 cents. Even I know I don't play that game too much, I know it is one of the life time that this app is so cheap. 1/10 of a dollars. For next couple days. I know I will buy at least 6 apps everyday too. What I really thinking now is it is worth it? I know it is cheap but what is the point of buying some apps that I like but I don't use. Maybe I bought it for fun but since I have no income any more. Should I do that or shouldn't I. I don't know the answer but all I know is it just really cheap and buy it before it went back to normal price. For anyone that want to look at it, click here.