Cap'n, remember, it's all subjective. You wanted the HM pin set (you even have another post for Madame Leota, remember?) a lot. Maybe this other person wanted the 50th stuff a lot. I agree, if you're happy, then it's good. Don't second guess everything you do and every trade you make. You've been at this for a while. Look at the dumb things I've done:
Sold back the wanted poster I got from the one and only card I received from my trip to WDW in April.
Traded my teleportation magic for fireworks magic.
Traded a bunch of narnia transporters for blue lanterns when I didn't realize that blue lanterns were for sale. Confused blue and cyan!
Got confused on colors (again) and traded a cyan rocket seat for one Mickey Christmas tree.
OK, do I need to go on? LOL.
You got your set. Smile and go on to the next trade!