My son and I both rec'd treatment beginning in 201...

My son and I both rec'd treatment beginning in 2012-2013 and have been in retainers for several years now. My son had traditional braces and his experience was unremarkable (hence one star). My experience was totally different. I did Invisalign, which ultimately worked but took a year longer than quoted (with Dr. Alborzi showing up as condescending and argumentative during the many complications from treatment through retention). But I'm not even writing about that, I'm writing about the predatory practice that I just experienced this morning when I went in to replace the retainer I lost on Friday. Retainers are pretty important...without them, you lose all the time and money that came before. And retainers aren't forever: the materials break, they can get misplaced. While I was still an "active" patient (as of 2018?!) I paid $300 for retainers. This morning they were going to charge me $600 per, $1,200 for two retainers (I wanted a spare on-hand). When I said it was too much, they gave me one other option of getting four for $960. This is an exploitative, predatory practice. The true character of a provider reveals when you've already paid the largest bill.