In chronological order:
Fail #1: Assuming all ponies from the show were rare and expensive, paying 15€ for a Galaxy with multiple issues thinking I had struck a bargain. Meep. She was my first ever G1, but there's always been ponies I liked more. Speaking of which,
Fail #2: Paying 21€ for a MOC Berry Bright. ...That I opened. Because it was my birthday and I wanted the experience of opening a pony I could've had as a kid. Problem #1: I learned later that early G2s didn't cost nearly as much, even MOC. Problem #2: Berry Bright isn't my favorite G2 or anything, so not worth spending that much money on (now if it was Copper Glow, on the other hand...). Problem #3: I OPENED A MOC PONY FOR THE SAKE OF A SHORT-LIVED FANTASY. *bangs head against wall* Yeah, she
was overpriced and thus it would be hard to get bought by a MOC collector (who'd be much more in tune with the prices than I was), but I had already read
this article on TFWiki, and I
still did it. ARGH THE GUILT
Fail #3: Missing out on not one, but two of my grail ponies, MLPTales Clover and Melody, due to being out of funds because of a BJD I don't even enjoy. ...And that my mom doesn't want me to sell. Buf.
So far this forum has easily been my best experience. Everyone is so nice and just tries super hard to be fun and fair! This is my absolute Pony Happines Go-To Place!
I definitely second that sentiment, Bunbun. Even if I don't post much, so far this has been the only forum I've lasted on longer than 2 years!