The new feature you added to the marketpress major update (Grid display) is not properly formated: product price seems to mix with product name.
To produce this error, try having a long product name...
I am sure its something that has to do with the css, please fix it.
You can roll out a product like that without noticing that kinda error, yet ignoring it.
FYI i used this on the marketpress theme provided by wpmudev. Thanks.