I bought mine on ebay from this seller. I paid $12.91 total and it came in a week from the UK! I've only used it a few times, but it's the longest wear concealer I've had. I have long days (waking up 6, getting home around 5) and by the time I get home, my concealer is usually gone. I didn't have a long day today, but I took a nap and I still see some coverage. The concealer dries quickly so I have to work with it quicker than usual.
Collection 2000 Lasting Perfection Ultimate Wear Concealer in Medium 3