Hi!
I have to say that I love love LOVE! Bigcommerce!
They start at $25 / month - which is probably more than what you're paying now but I think it's worth it. I guess I should mention that no - I do not work for them in any capacity and I'm not related to the CEO or anything! lol I just had a terrible exhausting time trying to get a decent store / cart / website up and running for a decent price - when I finally found Bigcommerce it was like the ecommerce Gods were smiling down on me...
Good Stuff:
- really nice modern free templates (and some paid too if that is what you want)
- 100% customizable templates - seriously - you can change pretty much everything
- gift certificate feature
- they don't take a % of your sales - just the monthly fee
- integrates with lots of processors like Stripe (love Stripe!) for one page checkout!
But the most important thing for me was their mantra - if the sellers do well we do well. So what makes them different is that they will answer your questions for free and are always there to help you out. They have excellent tutorials, videos, documentation, to help you get your site up and running. Plus they even have a forum with staff answering questions and troubleshooting for you. And they're nice. Oh- and they're always asking for feedback and ideas for improvement - and then they actually do the stuff their customers want. They just added a built in blog feature - a lot of people wanted that.
You can get a free trial here:
Ecommerce Software & Shopping Cart Solutions | Bigcommerce
Good Luck!
Edit: I don't know why the link is weird - it looks like an affiliate link - which it's not... If you want a free trial just go to their website: bigcommerce dot com