Those were the days my friend, those were the days.
@OP Highest i have paid was 20$ for a 3 character. The 2 character i have i got for free.
The most i would pay for a tag is 1500$ if i KNEW it wouldn't be banned or taken back. And that is for the gamertag Shadow but i know Josh would never sell it.
Highest is like $20 for a Twitter, I rarely have any disposable income though. I'd go up to $50 probably, I don't see the point in spending like $500 on a tag.