Blades and filters aside, its hard to get prices for parts online. You'll usually just get a "call for a quote" at best. Luckily most bandit parts are not proprietary and can be found at local bearing shops, NAPA stores, clutch stores etc, you can substitute things, or have them made up. Make friends with a local welder and you can probably get a lot of things done for a reasonable price. I've added different things to my 250XP over the years and usually just fab up what I need from scrap.
Nice album by the way