This may be a good one. It is very similar to WaterRower at a cheaper price with a 5% coupon on amazon.

https://www.amazon.com/gp/aw/d/B08112837J/ref=sspa_mw_detail_1?ie=UTF8&psc=1&th=1

You could also look into the rental option that WaterRower has.

I actually bought the WaterRower club and love it.