I paid 428 CAD for my Alpinist on Ebay. Brand new, boxes, papers, etc.
SEIKO SARB017 Mechanical Alpinist Automatic Men's Leather Watch - Made In Japan | eBay
Free shipping, arrived in 4-5 days from HK, with tracking numbers. (I was incredibly surprised it arrived within one business week from HK)
The seller had a few in stock when I bought it, not sure if they still have more.