I've had it a couple of years, but since eBay took over a couple of months ago a few of my favorite features are gone (mostly the ability to research "hot" items). A few days ago I got a message that eBay would be refunding the unused portion
I've subscribed to Terapeak for a decade. At first it worked perfectly, simply and was worth it's $120 year price. Slowly the price doubled and features where removed. Recently they removed Product Research 1.0 (the classic product research)