Most people start out wanting an indoor bike with the best intentions but fall off the wagon after a few weeks at best.
Visit a few bike shops and talk to the owner/manager about your goals, plans, budget, etc and you'll probably walk out with the right bike for you. Riding outside is MUCH more enjoyable than riding inside.
Can you put price on good health?
I started riding at 55 and weighed just shy of 250#. A year later I weighed ~180# and have kept it off thanks to cycling. I'm now 72.
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The Lord is merciful and gracious, slow to anger and abounding in steadfast love. - Psalm 103:8
I am a cyclist. I am not the fastest or the fittest. But I will get to where I'm going with a smile on my face.