I've offered to sell estate jewelry on a few occasions to Michael's. Service has never been exceptionally friendly or rude, mostly just indifferent (very business-like). Prices offered for my goods have always been a bit lower than the regional average, ie. last time around they offered exactly 5% less than the dealer I ended up selling to. The store is clean, safe, and easy to find. However, Michael's simply doesn't stand out among the crowd.