Do you already have a bike (or are in the market for one)? If so you could look into getting a bike trainer rather than a total separate stationary bike.

They’re nice because you can use any bike that you really like and swap between the trainer or regular riding when the weather is nice. Here’s an example: Amazon bike trainer.

Basically the back wheel of your bike attaches to a spinning wheel so you can bike stationary.

Sportneer from amazon

This is the one I bought. Looks like it’s $129 now (probably because of the pandemic—I bought it back in early March)

Sportneer Bike Trainer Stand Steel Bicycle Exercise Magnetic Stand with Noise Reduction Wheel for Road Bike https://www.amazon.com/dp/B071HQFKBY/ref=cm_sw_r_cp_api_i_vKsbFb6B5WC6M

Highly recommend though—definitely works great and the resistance settings along with my own gears gives me enough to adjust as needed for the peloton classes.