u/Lidska-spina

I bought one box of Blooming Radiance (English version), just to see how the cards look like (and maybe try to get my favorite girls). The basic set has 130 cards. When i saw how many parallels there is, it was sure i could never collect it whole. But i still think i could get the 130 cards of whatever variant.

Is it worth to and not too expensive to finnish basic set? Do japanese cards cost less?

Also if someone can recommend site/place where to buy/sell/trade single cards in EU, that would be great, cause my place only sell boxes and booster packs.