Whats the average number of fusings to 4Link?

Dont you absolutely fucking hate it when you get 2-3 4Ls in a few fusings and then the next one costs you 15+?
How about spending 8+ fusings for a 3L? I'm fine throwing fusings at 6S trying to get 5Ls and not getting them but not being able to 3L in a reasonable amount is just annoying.

I'd say the average is 3-4. It got substantially buffed at release so now it's normal to get a 4 link in a few fuses.