The majority of Bar B Q Parts such as Regulators,Hoses and Burners are available from sources other than the Manufacturer!
That said the sum of the replacement parts can quickly approach the cost of a complete replacement.
Re the Weber ...These are a whole lot better Made than most of the Shiny Stainless Steel Looking units currently available !
We just purchased a Q 1000 which replaces the Q100 at a slightly higher price!
So far We are happy with the Grill although The design of the Burner will stop Me from using Sauces. And Marinades as they can drop right unto and into the Holes which face upwards.
Fortunately for Me ,we both prefer the better Cuts of Meat which don't need sauces to taste wonderful.