In $2019,$ Epson's EcoTank ET$-2720$ all$-$in$-$one printer retailed for $$199\mathrm{.}99.$ By comparison, several of Epson's other all$-$in$-$one printers retailed for $$149\mathrm{.}99$ or less. However, marketing for the EcoTank printers provided test results that showed who switched to EcoTank printers could save up to $80\%$ by using low$-$cost ink replacement bottles rather than higher$-$priced ink replacement cartridges. Which type of customer value was Epson emphasizing in its marketing for EcoTank printers?

$1)$ Economic value

Functional value

Experiential value

Social value