Quick question too - are CS3 sold out ? Says so on their site ?
Just a general reminder: Even if the CS3 is already sold out on the official website, you can find many bargains on Telegram or eBay. Especially on Telegram you will find lots of people who are dumping their black/green stamps for super low prices. I have recently been able to buy a few stamps for my collection below the issue price.
But always remember to use a trusted escrow when making purchases and dealing with unknown sellers.