A lot of stores now offer free delivery. I guess it's their marketing campaign to remain profitable. I always receive in my mailbox or email some promo codes for free delivery or discount for some products. I think that campaigns like this one are pretty standard for any store to compete in the market and to remain profitable. Besides, with the pandemic, it's become really convenient and safe for customers.
The only issue is that I don't really trust online payment methods. Once, my account was hacked, and since then, I have had trust issues with banks. However, my friend reassures me that
chargeback prevention services help with issues like this.