Pina Colada Water is considering introducing a water filtration device for its $20-$ounce water bottles. Market research indicates that $1,000,000$ units can be sold if the price is no more than $$4.$ If Pina Colada Water decides to produce the filters, it will need to invest $$2,000,000$ in new production equipment. Pina Colada Water requires a minimum rate of return of $18\%$ on all investments.

Determine the target cost for the filter. $($Round answer to $2$ decimal places, e$.$g$.10\mathrm{.}50.)$

Target cost per unit $,$$