My brother and I did the old lemonade-stand thing to earn money to buy Titlematch when we were kids in the late 80s. I believe we acquired Ikari Warriors in a similar fashion. Oh the memories! As far as the game itself, Titlematch leaves a lot to be desired. Still, I'm nostalgic for it, and I do still play it once in a while. I'd give it a 'meh' to balance my own emotions with the gameplay.
Kung Fu Master came later, during the ebay era. I believe it was one of the last 5 or so original 7800 games I had to purchase for my collection to be basically complete (I think only Mean 18, Tank Command and Motor Psycho came later for me). I do like it, but it seems like it should have utilized the 2nd button. No biggie. Somewhere between meh and solid.