How much is the insulin pen at Walmart?

Excuse me, I'm in the market for an insulin pen and I've heard Walmart offers competitive prices. Could you please provide me with an approximate cost for an insulin pen at your store? I understand prices may vary depending on the brand and model, but a general idea would be greatly appreciated. Additionally, would there be any discounts or promotions available for first-time buyers or customers with certain health insurance plans? Thank you for your assistance.