Converting the guest bedroom into a small exercise area

My wife and I have decided to convert our guest bedroom into a small gym. We already have a great exercise bike for lower body and legs, but we need something for upper body, arms, and torso.

Friends have recommended a rowing machine, which I think would be ideal, but a high-quality one is quite pricey.

Do you think it’s worth investing in a rowing machine, or are there other home equipment options that could work for upper body exercises?

r/resistanceband is great for full-body workouts.

The bike is primarily for cardio.