Apparently 35 Remington 200 grain corelockt is available again. I was in Cabelas today and found 9 boxes at $29.99 today. I only bought 5 boxes.
Interestingly I was in Sportsmans warehouse in Anchorage a couple of weeks ago and it was almost $50 a box. If you are still looking I'd go look now.
A couple of months ago I got an email from Brownells and they had it in stock. Can't remember the price, but higher than I thought it should be so I passed. Now may be a time to start looking again. Good luck.