didn't feel to be too high for me
last life I went into the Enhancement pass using a dated stunning fist stunning blow based monk 12 fighter 6 rogue 2 build that I fist used back around U14
U19 hit around lvl 13 for me and I changed my path (without using the free 20LR) to 10 monk 8 fighter 2 rogue
I respeced my enhancements along the ways quite a number of times.
respeced for higher stun DC's at first then once I got my 8 fighter levels I respeced to Kensii Keen edge to be centered with Deathnips
took me a few swaps to get everything just right as I tested along the way.
I did not record the cost of each reset but, it did not feel too costly to me definitely not as high as anyone here is stating.
on a more important note than cost: CANNOT BEING TO EXPRESS HOW GLAD I AM THE 3 DAY WAIT IS GONE FOR ENHANCEMENT RESET!!!