I don't envy your choice, I'm fortunate enough to be able to put a couple on the market and have some left.
If I only had one, I'd cling onto it!
Although I could practically afford a gold maxed summoner for my maxed gold rusty, I probably should sell, but I kinda like him you know!
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If it sells then I can do quite a lot. It's hard to know where prices will go in the long term. I just don't worry about it too much.
Yes, you can buy a lot of more useful cards, and I think an 8 times increase in value is a legitimate sell point,
Important thing is not to worry about it your right, just enjoy the game and accept any gains you might make out it!
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