Haha, well, the idea is that you can't have your cake and eat it too. You only get to pick two in this (or any other) hobby:
CHEAP + FAST = more than likely not accurate (substitute "good") - I make a lot of these parts
CHEAP + ACCURATE/GOOD = handmade, found items, or a solid seller with a long list... any of the three takes a long time
FAST + ACCURATE/GOOD = ain't gonna be cheap. Either you're paying someone a lot to rush job (etsy) or you've found someone's that's already finished (here)
Another fast + accurate is in regards to paint jobs. I know quite a few folks that are fabulous artists, but they don't make the parts. For example, I got Darth Stone's Vader bucket, but unfinished, because he takes a really long time. I got my Vader helmet painted at a body shop that specializes in custom cars. Gave them paint codes, schematics, and a fistful of dollars, and I got handed a beautiful bucket.
I personally don't know anywhere to get cheap, accurate parts with a quickness. Definitely not boots.
I disagree....you don't get cheap and accurate....you don't typically get fast and accurate...but if its cheap and fast its unlikely accurate. Unless you get lucky and find something at a yard sale like an MQ1 or other found part, items that are budget friendly aren't very accurate.
Best advice is save for the good stuff, or compromise and buy the next best thing or used item. I say don't skimp on them as theyre very visible, and can make a good suit great or a good suit mediocre.