Seeking Chicago bike shop recommendations for heavier riders?

I'm looking to get into cycling and would love some recommendations for Chicago bike shops that are welcoming and knowledgeable about bikes for heavier riders (around 350 lbs).

Also, to your knowledge, would a bike with the necessary strength and support be significantly more expensive than average?

Assume I'm not looking for Cadillacs but not looking to purchase something of poor quality, either.

Thank you in advance.