More than 3 rows of items in aStore possible?

I integrated Amazon store for a client at http://www.destinationtravelguides.com/store/ and he wants the store to expand vertically.

Is it possible to get more than 3 rows of items to be displayed in aStore w/o using a paid script? (perhaps via custom CSS?)

Thanks in advance.

 

I can't help you with your store layout, but I hope you don't mind a hint about your side navigation. Under "Central America", you have Alabama, Nevada, New York, Texas and Utah. Imo, those states belong in your North America -> United States category. Costa Rica is part of Central America, so that does belong in that category.

 

Im afraid you cant do that on amazon stores..

 

I think you can not edit the rows of products. Maybe I'm wrong. You can find your answer from astore help.