Does anyone have a better insight that's not coming from someone that is trying to up sale a product?  :o

These are public record and there is a GIS Database (Portal Catastro Digital y Productos Cartográficos (crimpr.net))where you can access this parcels to see their "Catastro number", owner, area, the assessed value for both the land and the structure for tax purposes and you should also see the date of the last sale and the price.