These 2 cards can lead to some pretty sick stuff. But by themselves, they don't do much. They need other support to make them work. I'd say that King's Court, Grand Market, and Peddler are about as good as it's going to get.
I've been meaning to post
this game for awhile now. My opponent and I played a very similar strategy. I open Silver/Silver whereas he opens Watchtower/Silver. I wanted the money to get up to KC as early as possible. I get KC first, but a massive Inn purchase on Turn 6 leads to my opponent getting 7$ with Haggler in play and watchtower in hand. From there, it's pretty much gg as he has consistent good hands for the rest of the game. I felt like I still had a chance (albeit very small) until I drew my KC dead on Turn 10. All in all, a very interesting game highlighting the synergy of Haggler, other powerhouse cards, and the ability to top deck gained cards.