Hi Mike – Oops! I missed that this was a Simple Shopping Cart question. I use the WP eStore Plugin. Having said that, you might be able to accomplish things in a similar manner. Sorry for the confusion!
For the WP eStore Plugin –
I just ran a test using the Fancy Code, so I ended up with the Product picture, description and Add to Cart button… so yes, it is possible. It stacked things to fit but it doesn’t look bad. Note – on this site I am running one fairly wide (@ 330 Pixels) sidebar on the right.
I used the PHP Widgetify Plugin. You will need to include the full PHP code, not just the short code…
<?php echo show_product_fancy_style(; ?>
I know that you asked about using a Buy Now button, so you might have to do some mods… but definitely, it can be done with the Add to Cart option!