Perhaps you might consider replacing the 'true' button label with something more clear like 'place order'.
The site is not very intuitive, but I eventually found what I was looking for (3 star). I won't recommend the site (2 stars) because a) the aforementioned counter-intuitive nature of the site, and b) I use he card printer for work, and infrequently at that. Each roll of ribbon purchased will last me a minimum of 3-5 months. I purchased 10 so I wouldn't have to order more for years, by which time I may as well purchase a new printer. Will I buy from you again (4 stars)? Yeah, totally. Great prices, range of products, and customer support that you don't have to scour the site for. It makes me believe customers are a high priority, and that's something worth mentioning. Overall, 3.5 stars - well done (don't average my stars, the math doesn't work).