Bill is right about not finding a "cheap Ramon's" but the SunBreeze might be an option.
It's just up the sand from Ramon's, so the location is great. It has a wonderful pool, one of the best on the island. It's on the water, though there's no real beach. I don't think any of the rooms have fridges, but they are spacious if a bit motel-like. Around US$90 and up, depending on when in November you're there.
Another option is Paradise Villas toward the north end of town, but still walkable to everything. Pool, condo-style units, small beach. In the US$100-$125 range probably. Some owners rent direct, other units are rented by Tradewinds.
Mayan Princess in the middle of town is a terrific value most of the time, with one-bedroom condo suites. But no pool.
Belize First Magazine http://www.turq.com/belizefirst/