This is indeed not my first recommendation when people are after deals. There are a lot of one-person bonsai dealers around where you can find unique materials as they do not do the container-level import, but rather buy and sell through connections. We have a few bigger traders that import. Lodder for a long time was the #1 importer. Much of their stock used to be in the 0-200E range, and often -in my view- overpriced. I understand the shop is now run in a different way than some 5-10 years ago. I should give it a chance and drop in again. Two shots from 2013, to imagine the scale of this place
Lodder is kind of odd price wise. On the one end they have an abundant collection of mass market stuff like Chinese Elm, Ficus and the like starting at €10. Great raw starter stuff, and you're not going find this material cheaper anywhere else. They also have some pretty neat affordable pots (<€10 for shohin size), more so than I've seen at Bonsai Plaza who don't seem to cover the low end of the market when it comes to pots.
But when it comes to refined trees in bonsai pots they're really quite expensive, especially their Shohin material can be a bit of a shock at times.
They do have a large selection of absolutely gorgegous show level trees . Most of these trees aren't even priced though, and I have seen tags go up to €3000.
Still worth the visit though if you're in the area. I live relatively close by ,so stop by once or twice year for some supplies, pots, substrate, wire, what not.