Where to find alot of yarn

My mom just keeps going. There's no stopping her. She's a machine. I have so many hats now.

But I won't discourage her. The only issue is she goes through yarn like crazy. Like 1-2 skeins a day.

For Christmas I was thinking of getting her a "lot"

Anyone know where I can find like a lot of like 50+ skeins of various colors?

Doesn't have to be that many, but for example what I'm hoping to find.

Ima be honest, I don't want to have to buy 50 individual rolls.

I appreciate the help