When the timewarped Mounts were first announced for 50.000 badges with each boss dropping 125 making it average 575~ for Wotlk Dungeons people were furious as it would mean around 400 dungeons for the mounts alone, not counting the pets or toys at all. When they subsequentially lowered the ammount to 5000 a lot of people were relieved to get their "It's just PTR, it's not final." finger wagging moment.
Except being the sneaky people they are, they also dropped the badges from 125 to 5 per boss with 10 for the final. So a full run of Utgarde Pinnacle just netted me 35 Timewarped badges. Which means I only have to run Utgarde Pinnacle 142,85 times for the mount! Not including the toys. Compared to the 86,5~ Dungeons I would've needed for the 50.000 at 575 average item level!
On a side note. It's funny how the heroic requirement used to be 180 item level but we're scaled down to 180, making us actually undergeared for those dungeons and weaker than a Wotlk group freshly 80 doing these was back in the day. Oh the fun!