I absolutely felt better afterwards. Noticeably better immediately afterwards, and night and day better after a few months of chelation. I am still chelating now.
Being though I had 12 fillings in total, I had them removed by quartile (e.g., top left, bottom left) over the course of two weeks. I noticed a big difference in particular after the removal of a particular quartile, almost like a weight lifted off my shoulders, so that quartile may have been the main culprit. Lord knows some of my fillings were over 25 years old (I ate too much candy as a kid!).
As for the cost, it was pretty expensive, over $5k, but there are a few reasons for that: 1) I went to a holistic dentist in midtown Manhattan, because he was the nearest one I could find who seemed like he knew what he was doing; and 2) I had 3-4 cavities that needed to be drilled and filled in addition to the 12 fillings I wanted replaced. Luckily insurance covered a decent amount of it, but not all.
In my opinion, replacing Amalgam fillings is absolutely crucial to recovering. I agree with you that Antibiotics were the 'trigger' to most of our health crashes, but I am of the opinion that there has to be something going on in our bodies prior to the Antibiotics that is keeping our immune systems bogged down and our beneficial flora in low numbers, which set us up for the Antibiotic crash. Otherwise the flora should have been able to recover after the Antibiotics , like it does with normal, healthy people. Anyway, my experience since getting my fillings removed and chelating has convinced me beyond a doubt that metal was at the root of my problems.