Hi reijam,
I’m not sure what size you are looking for because that would make a significant difference in the price as well and as you probably know your budget is on the low side to have many latex choices but posts #3 and #4 here include the better lower budget latex and latex hybrid options I’m aware of (including Dreamfoam). Just for reference as well post #4 here includes some of the lower budget polyfoam and memory foam mattresses I’m aware of as well (including the 12 in 1 customizable).
I would also make sure you’ve read the mattress shopping tutorial here which has all the basic information, steps, and guidelines that can help you with how to make the best possible choice in any budget range.
Phoenix