Thanks for your feedback, and sorry you're disappointed with the crates! The crates are randomized, meaning there is no predetermined mix of items that you will get.
A quick reassurance - most of us in the office have a farm and play it to see how it feels, and one of the biggest things we notice when playing is that when you are PURPOSEFULLY looking for something, it seems like it can't ever be found! It's like watching a pot hoping it will boil faster :)
Note: What you pay for when you buy crates is a chance at certain prizes - not the prizes themselves. Much like a casino (or any game where chance is involved!) they're not always exactly what you hoped to get, but sometimes you get lucky!