Different licenses depending on where you buy your font?

[u/plazman30]

I recently bought the font Tortilla and I had a choice of getting it from myfonts.com or fontspring.com.

Here is the price from myfonts.com

And here is the price from fontspring.com

So, if I buy the web font on myfonts.com, I need to pay $25 ANNUALLY and the price goes up the more hits my website gets. If I buy it from fontspring.com, I buy it ONE TIME for $25.00. Same for Digital Ad. It's a one-time purchase. And my $25.00 purchase from fontspring INCLUDES an ebook license, where myfonts makes me renew annually based on the number of units sold.

Why such a massive disparity in pricing between these two sites?

If I am going to buy a font, I will only buy it from myfonts.com if it's not available anywhere else and if I can't find a reasonable substitute.