let me help with the birthday minis and tonics.
minis (regardless of year) white 500g-2k, purples may get you up to 3k (marley may get a bit more), golds up to 10k (if you are lucky), and greens 1e or 2e (with some going for a bit more).
most of the tonics are worthless--whites for the most part are just taking up space in your inventory! prices go pretty much along the birthday minis prices with greens going for a bit more than that (morganite, kunnie, destroyer).
and we have a guide at the top of the stickies section, while it may be from 2012, not much has changed for birthday minis and tonics since then ('cept a decrease since more people have had birthdays).
(banana scythe and gingerbread shield are also pretty much worthless as well)
where is the 'all you can eat' cookie bar?