You can also go to the guy's website and buy them individually if you don't need or want to replace to everything. He also has kits for other things like boats and harleys.
$50 bucks is a lot of money for nuts and bolts. But after looking at the current bolts on the SS I noticed how rusty they were. So when I ventured out to find my own nuts and bolts I knew I should go for stainless steel as well so they won't rust again. Finding the right size and the right thread and wondering if they would fit and on and on I realized finding substitutes was not going to be easy either. Eventually I also realized I was rapidly approaching the $50 bucks for quality fasteners that I could just get in the kit and know they would fit right and work right the first time. So back to eBay I go. Purchased the kit and they arrived quickly.
I recently used the Caster Kit on my caster upgrade project and the bolts are top notch. The old hardware for the casters had a flat head and square nut and they were steel so they were rusty and seized. I really gnarled them up getting them off. The new kit came with stainless steel nuts, washer and nylon lock nuts. They are nice. I would give the Caster Kit 5 stars.
I have not had time to put the remaining fasteners on the SS but plan to. As I do I will add my opinion on that kit's performance and ease of install. So keep checking in.