Hi Hardtimedeciding,
Congratulations on your new mattress first of all … I think you made a great choice 
I agree that this may not be the most cost friendly choice for a mattress that is only used very temporarily but if you like the overall “feel” of latex then a lower cost latex or even a latex hybrid mattress (latex/polyfoam or latex/innerspring) may be a good choice. There are some lower cost latex options in the list of online manufacturers that are members here in post #21 here and some of these also have one or more exchangeable layers so you can make comfort adjustments after a purchase if you need to do so. I would also keep in mind that while a latex hybrid will still have latex in the comfort layers so it will have some of the general “feel” of sleeping on latex … the design will also be different and it won’t be zoned so it will not be the same as your Flobeds.
I would also call the local stores in the Macon / Atlanta list in post #2 here and ask them if they have any latex / polyfoam hybrids or latex / innerspring hybrids inside your budget range if you want to do some local testing. There may be some good value there as well.
Phoenix