Agreed. I really like the motorized saw blade and I also agree that the stock blade (or even a gold mirrored one) looks better to me than a real blade.
I still remember when you could get kits for like $70. Now they are almost $300 with the Marquee mirror. Alas, I bought one of those latter kits. I love it, but it was far from affordable. Kind of like the little magic wands with an LED in them. People want $100 for basically a $4 wand, cut in half, with a LED and some wire shoved down into it, some clips on the end and a little mount. Less than $10 in parts, plus a little time, but not much, and that somehow equals $100? Then again, I did buy that aforementioned saw and marquee kit for a lot more than the parts and assembly.
LEDs are popular and can run upwards of $200. I like the ColorDMD after the LEDs, but that is another $400. Fresh "gold" (brass) all around can set you back about $850 or so depending on where you get it done and how much you have them do (plus buying new vs. having them clean up and plate your existing).
There are other, smaller items that are nice. I've got some toppers for my flipper bats. Subtle, but a nice touch and only about $10. You can buy or make your own chains and lock(s) for the top of your trunk. I did that twice, and like my current design a lot more. Total cost was about $15, with enough materials left over to make about 3-4 more.
Don't forget about the Pinduino. Looks super cool in the videos. I am hoping to get mine connected after Thanksgiving.
All sorts of little mods and trinkets that you can add, just don't clutter it up too much.
Have fun, and welcome to the club.