Very nice, Rose!
As far as impulse goes, I do it all the time.
I constantly tell myself to stick with 52 Topps cards but more times than not, I deviate from that thought process!
Being a member on this site definitely doesn't help, and with the direct link to E-Bay postwar, well that just makes it worse!
As far as purchasing cards I have regretted purchasing, I don't recall any specific ones but I have questioned myself after the fact, why the hell did I bid on that?