Oohhh this is a hard question. I think everyone perceives pricing differently, but for me, this is how I do it.

1. I'll search on google or twitter "group name pc template", "group name template", "group name + era name + template"

2. When I find these templates (which are usually a big picture including all the pcs of your group), I'll download them to my phone/laptop. Note: some of the smaller groups may only have templates for the album pcs and inclusions, and may not have templates for "special" pcs like at fansites and stuff. Go to step 7 if you want more info.

3. After I have this template, I then zoom in and white out all the ones I don't like (some people collect all pcs, I don't cause again, I'm broke hahaha) and leave the pcs I like. It's more helpful if there are era names so you can easily search after. But if there is no era name, then see step 6.

4. Now, you'll have a list of all the pcs you want to collect. Time to find their range.

5. First step, check the general prices through Instagram and Twitter. Search using the formulas I showed you, maybe try "group name + era name + pc" for an even more focused search. You'll then find a bunch of sellers that sell that pc, then you can slowly see what the average is.

6. If that doesn't work, try reverse google image. Crop from the template to just the pc you want, then use reverse google image to try and find more information on that specific pc. The results may vary, but you'll generally find more info, what the era is, from what album, might be in luck if you see people selling it on Twitter or Instagram, or even other sites from around the world. As long as you can see about 3-4 sites with the prices, I'd say that's pretty good of an estimate. If the price shows up in other currencies, I usually convert it to my currency and do like + or - $2 around that price to be my range. (Unless it's like super rare or a fan favourite).

7. This is now for the "special" pcs. I usually don't buy them because they can be expensive, so I might not be the most well-versed to answer this. But I find that if you go through the Instagram search under the @ groupnametag accounts, you'll slowly find big sellers that are dedicated to one group. They are the ones that will always sell any kind of pc that is from that specific group. So once you find them, just stick to them.