I always thought the 20% was reasonable, it is a business after all and Fiverr provides sellers a lot of great services such as doing advertising on Google, etc… Not to mention they bring the business right to you.
I felt the increase of purchase fees to $2 was a bit much, especially on $5 gigs or when buyers are kind enough to leave a tip. They want to give a $5 tip and all of a sudden Fiverr is weaseling them out of $2, now it’s $7, and of course they still take their 20%. Gives a bad impression if you ask me.
And then adding that $2 fee on for buying from your Fiverr balance was another poor move in my opinion, I am a seller but I use other Fiverr services fairly regularly, and that was a nice little bonus to be able to pay from my Fiverr balance with no extra fees.