Capital Seafood in Monterey Park has an early bird special for dim sum. All small, medium, and large dishes go for $1.88 from 8 AM to 1130 AM. This means you need to get the check before 1130AM. The dim sum is medium quality--not quite Elite or Sea Harbour but much better than Yum Cha Cafe. We got there a little after 830 AM. The selection was a bit on the sparse side, but it really picked up by 9 AM--many more carts and larger selection. It was moderately crowded, so I think their promotion deal is rather popular.
There are other dinner specials listed in Chinese, but I was too lazy to translate them.
They also have a takeout location just a few storefronts to the south between Kee Wah bakery and Wing Hop Fung. All dim sum dishes there are $1.88, and there are the usual roast ducks, roast pork, chicken, etc.