1 The median is the middle value of the data set. 2  The lower quartile (Q 1) is the median of the lower half of the data set. 3  The upper quartile (Q 3) is the median of the upper half of the data set. 4  The interquartile range (IQR) is the spread of the middle 50% of the data values.
Removable Essix retainers typically cost between $100-$250 for one or $200-$500 for two. They are made from a vacuum sealed clear plastic that is less noticeable but more likely to break or warp, meaning that you could be paying the price more than once for this style of retainer.
The exact cost of the retainer will depend on the complexity of your case and the level of experience your attorney possesses. It is common to see retainers anywhere from $2,500 to $15,000 for a divorce or family law case in Texas. Complex divorce or child custody cases might require a down payment of $25,000 or more. You will be quoted a retainer at your initial consultation and that retainer amount will be in your fee agreement.