It depends on the goal :)
If you want as much feedback and awareness as possible you should start lower
If you want to validate pricing before public release, you should price it higher. It would also have the side effect of really highlighting who are your best customers for the final product.
Think about how much it helps your early users. If it's still basic, maybe go for a lower price to draw people in and get their thoughts. But if your MVP really nails a big problem, you might even charge more from the start. It all boils down to how cool or unique your MVP is and what you're aiming to achieve with it.