My blades, but not blade holder (also known as “blade tool”) arrived! I bought them from different sellers on eBay.
If you’ve priced the cost of blades for the Silhouette machines, you know that they are pricey and sometimes you get one from a bad batch. So I looked to 3rd party alternatives and the Graphtec CB09 blade holder came up. I bought one for $25 with 3 blades included and a 5pc blade set for $10 from another seller. Free shipping on both.
I haven’t gotten the chance to use the blades yet, but I do know that blade adjustment is fully manual. It does not have a convenient ratchet system, but that’s industry standard. By being manually adjusted, it gives you more control over how much blade is exposed.
If you check out eBay, you will notice that they offer 30°, 45°, and 60° blades. Both black and blue Silhouette blade holders have 45° blades. It has middle-of-the-road capabilities like it will last longer than a 60 because you’re using more surface area of the blade to cut with, but it will not cut intricate designs, vinyl, and thicker material as well as the 60.
The 30° blade is meant for large designs and also fabric, which I regret not knowing before I purchased my blades because I would have gotten the sample pack that has all three types. I’m very interested in cutting fabric with my Portrait but I haven’t done it yet. I don’t want to hurt my machine!
AngeliCuts'n'Sews 
wondering how you like your blades and holder? couldn’t ever get mine set up like I wanted. went back to the Silhouette blades.
Ha, me too, Ann! It’s because I only ordered 60 degree blades like a dummy. I did not know at the time that you could not change the blade offset. I haven’t bought 45 degree blades yet.
Thanks for the reminder! I’ll look into getting some with the next paycheck. Maybe I’ll write a follow up post too. Thanks for commenting! :)