I've been trawling the internet to find someone in a similar situation to me, but I can't!I have 98 trays - for both upper & lower (as in 98 for upper, 98 for lower - 196 in total!) It's costing me $10,000AUD (try not to fall over backwards after hearing that.)I believe I'm to change them weekly as was promised 2 year treatment time (ortho was away at fitting so waiting the weekend to find out - talk about lack of communication...) But oh my god. I didn't think my teeth were that bad!