That´s a good question, and i will try to answer it.
I bought my first set of Bahco M1952 (7-19mm)around 2007 (for market price 150 USD), after 2 years i went to Bahco outlet and found this set for 25 USD(!!!) instead of 150 USD, i mean, comon, i can´t resist that price...so i bought 2 sets.
Then a year or so later i found a set on a Swedish ebay site for 20 USD(!!!), i mean, i know what this set is worth so i had to buy that set to[emoji38]_hitti
The bigger sizes 20-36mm have i also found on this Swedish ebay site for almost nothing at all, people doesn´t know when it is quality tools, better for me...
I mean the biggest sizes 32-36mm i bought for 5-10 USD a piece(mint con), they are worth
70-110 USD a piece
Hope its a good answer?
The funniest thing about my tools are all the comments i get everytime i open my toolcase by my customers.
Last week a girl stood and was paralized of what she saw, the comment i got was: "I want a toolcase like that too because it looks like you can repair a powerplant"
[emoji38]_hitti[emoji38]_hitti[emoji38]_hitti[emoji38]_hitti
Here is the toolcase, if you haven´t seen it before: