Water Softner for rental property ($3000 versus Budget friendly Home depot models)

[Sendil Thangavelu]

I have a property in Ocala, Florida with well water. Testing revealed 21 grains per gallon of hardness. I've received quotes for professionally installed water softeners around $3,000. I'm wondering if a more budget-friendly option, like the RHEEM water softener (42,000 Grain Preferred Plus Water Softener for Hard Water and Iron Reduction) available at Home Depot for around $500, would be sufficient.

Has anyone had experience with similar DIY water softeners? Any insights or advice you can share would be greatly appreciated! Thanks in advance.