Yes. eSIMAdvice currently lists 25 Redsim Tanzania plans.
The cheapest Redsim Tanzania plan is Tanzania · 1 GB · 7 days · 4G, at $4.19.
Tanzania · 90 GB · 30 days · 4G · 3 GB/day then 1 Mbps has the lowest price per GB right now: $1.08/GB ($97.40 in total).
No coupon is applied to these prices right now.