What I generally do in cases like this is buy some spares at the time I make my purchase. When I bought my last iron, I also purchased 10 tips (3 different sizes) and a spare heating element. It saves a ton on shipping charges.
ive had my weller since 1985ish, never broken down and looks pretty new and you can get spares for it. those soldering stations look good but will they be around in the next 20 years when you wand a new tip/spares, i know wellers are expensive maby a second hand one of ebay