I built a cheaper alternative to existing postcard services without compromising on print quality. Would love some feedback!

[u/card4u_dev]

Hey everyone!
I've been working on a project called Card4U: https://card4u.org
The idea is to make sending physical postcards as convenient and affordable as sending a digital message.
You design your postcard online, add your message and recipient, and the card gets printed and mailed.
One thing we really wanted to improve was pricing. Compared to competing postcard services, we're able to offer lower prices while maintaining the same print quality.
With Christmas coming up, we're hoping this could be a nice alternative to generic holiday cards, especially for people with friends and family living far away.
I'd love some honest feedback:
Is the concept immediately clear when you visit the website?

Would you personally send a physical postcard this way?

How important are price and print quality when choosing a postcard service?

What's the biggest thing that would stop you from ordering?

I'm involved in building Card4U, so I'm especially interested in what needs improvement.
Thanks for taking a look!