First I would like to extend my condolences on you loss.
On the $89 soap dish. One would think that retailers would recognize that they are shooting themselves in the foot with this practice. I guess the figure you won't be back any way. Of course you can always say, throw in the soap dish or I walk. Be prepared to walk if you don't get it, because they are better at bluffing than you. You should know if the installer is an employee or an independent contractor. Almost all of this type of contract has a "normal and usual installation" clause. That's a hole big enough to drive a tractor trailer through. Before allowing any work to start get confirmation that the job will be completed for the agreed price. If the contractor claims unknown conditions or factors, find out "how much if you find that". You don't want him to be in a position of coming back half way through the job and charging you a $1000 to replace a piece of plywood. If you think I'm kidding read the thread
https://www.askmehelpdesk.com/constr...es-191673.html
Wheather or not the $6000 is reasonable depends on labor rates in your area and the cost of the new fixtures. You should know exactly what fixtures are being installed and have some concept of their cost. You should educate yourself on toilets. With the 1.6 gallon flush there is a lot of controversy.
Does the $6000 include retiling?