Yes. eSIMAdvice currently lists 25 Redsim Isle of Man plans.
The cheapest Redsim Isle of Man plan is Isle of Man · 1 GB · 1 day · 4G, at $1.91.
Isle of Man · 30 GB · 10 days · 5G · 3 GB/day of then 1 Mbps has the lowest price per GB right now: $1.04/GB ($31.29 in total).
No coupon is applied to these prices right now.