And that's when Alan continued the sentence:

"BECAUSE YOU DON'T CHARGE ANYTHING... people don't want art so they can brag about getting a discount, dumbass!!!!!!..... people want art to brag about HOW MUCH THEY PAID FOR IT YOU STUPID DUMBASS!!!! "

And I started laughing
I finally realized...
IT FINALLY HIT ME

I HAD BEEN CHARGING TOO LITTLE

and Alan pulled $7,500 out of his wallet cash

CASH......
$7,500....
10 times what I had asked for

TEN TIMES MORE....
And in his classic coolest fuck kind of Goodfellas character voice he said "from now on you're not charging anything less than $7,500"