I have owned a total of 3.
First one I bought from my friend who moved so it was 5 years when she gave it to me. I had it for another 10 years. That is a total of 15 years. And it is my most asked for pedicure , so I do about two a day.
I bought the Depilieve brand big wax heater and I leave mine on all the time on temp no 1,(lowest). It lasted 15 years it only needed replacing due to being broken in a burglary where hey literally trashed my entire salon and it got thrown out the window on a second story building , so it broke but miraculously enough I plugged it in and still worked but was cracked and so insurance paid out for a new one.
I have bought replacement lid and cord for the tub and the new design out still fits the original old design , which for me is very good. So you know you are able to buy spares if needed. Also they always do services and can repair items bought from an authorized Depilieve dealer.
My wax pot 400g I have had from when I was in school is nearly 20 years old also STiLL using it today.
All my equipment from depileve lasts for years, and they world wide I think. Bcoz I bought my one pot in the UK.