Yes. eSIMAdvice currently lists 27 Redsim El Salvador plans.
The cheapest Redsim El Salvador plan is Regional · 17 countries · 1 GB · 7 days · 5G · South America, at $4.69.
El Salvador · 90 GB · 30 days · 4G · 3 GB/day El then 1 Mbps has the lowest price per GB right now: $0.93/GB ($84.14 in total).
No coupon is applied to these prices right now.