Just get stuff you like. A lot of stuff floating around on e-bay.
Of course I'll get things I like but I'm also looking for cool things you can find easily. I'm not much of an online shopper that's why.
Like where would you find the TOS minimates? Those are tight!
I know you said you are not much into online shopping, but like everyone said the best way for you to find Star Trek minimates is online. You might get lucky with a comic store but you won't find the rare minimates.
Here is a store I go to and they are actually having a sell on some Star Trek minimates.