€99 is a strong deal against your used-market anchor: it sits well below the €273 25th percentile and far under the €632 median, so this looks priced to move rather than merely fair. On a percentile basis, it’s squarely in bargain territory for a set of three.
These are well-regarded isolation footers that can tighten focus, clean up low-level noise, and improve perceived dynamics when the placement is right. At this price, the upside is especially good if the set is complete and genuinely unused; for a buyer, the main thing to verify is that all three pieces are included and physically pristine, since there’s little reason to nitpick the model itself at €99.
Independent perspective — not a price guarantee. Always verify condition, accessories and provenance before purchase.