Recommendations for a cheap mattress?

I have a need to furnish a house and would like to buy a decent cheap mattress.

In the past, I had bought the DreamFoam Ultimate Dreams Latex mattress for around $600. Unfortunately I don’t think they sell this mattress anymore.

My wife and I are both side sleepers, I’m about 140 lbs she’s about 100 lbs.

The Ultimate Dreams Latex Mattress was a great value - but I can’t seem to find a similar Latex + High Density foam mattress.

Hoping someone has an alternative cheap mattress that they would recommend?

This is for a 2nd home and we won’t be sleeping there a lot of the time, so if there is a recommendation for something even. cheaper than $600, I think that would be OK too. I’ve read the Zinus Green Tea Cooling Swirl Memory Foam mattress is decent as well as the DreamFoam Hybrid and DreamFoam Essential mattresses.

Curious to get other’s recommendations on a decent mattress around $500-600 or less for a King or Queen size? Thanks!

Thanks for your help!