I am currently implementing a catalog for a light and sound rental service.
All items are shown as a picture on the left with a descriptive text on the right. The last 2 lines in the description are 1 line technical informations like "Power: 800W, 1 way 18" subwoofer. XLR in/out and out with lowpass". And the last line consists of buttons "More Informations", "Add to cart", "Compare".
In this catalog, how many items should be on screen at time, and how big should they be arranged. Should it be more like menu on the left and many small items on the right of the menu, or should the menu be on the top, and should there be many bigger items under that menu?