This is one of the largest (and busiest) Costco's I have ever been to. They generally have a good selection of samples (with friendly staff). They also have a large selection of clothing, beer, wine, and anything else you might want. However, avoid this place like the plague on weekends as it's crazy busy. I have a membership to both Costco and Sam's Club and the nearby Sam's Club (literally directly across Northsight) is night and day compared to this Costco (when Costco can be a madhouse, Sam's Club can still feel completely and totally empty).