I've been using It's Deductible with Turbo Tax for about 10 years and I have not been audited for my taxes or or anything I've donated or valued through It's Deductible. It's Deductible seems to use fair valuations for items, and I don't experience them as being too high. If anything, it's the opposite as I often donate designer clothing and footwear, and you can't really adjust for those other than the High or Low valuations it gives you unless you create a "Custom" amount (which I don't unless the item isn't on the list).
