Up n' Down-accidentally picked up

I was at a local CD/Hobby store & picked up a few games for the 2600, Trick Shot $1, International Soccer $1, TacScan $2 & a Zeller's copy of Pinball for $2.  I thought I was picking up a copy of Up n' Down for the Colecovision, which I already own for $28.  I got it home, started comparing it to see which one I was going to use as trade bait, lo and behold it was the 2600 version!  Duh!  Needed it anyway, so that was a nice surprise.  Anyone else accidentally do this?

I went to another local store & picked up Amidar, Encounter at L-5, Secret Quest & Double Dunk for .95 cents each, so it was a good day.