Checking prices of +R SL TY media at Rima (here in U.S.) says per-disk price in 100-disk spindles is $.41--i.e. $41 for 100 disks, which I think is very competitive for +R SL media of this high quality. I paid $70 at Amazon for Verbatim +R in 100-disk spindle (tho there was a $30 rebate)... and now the price has dropped on the Verb spindle at Amazon to around $40 (last I checked).
So this is my long-winded way of saying that if TY can be so very competitive on SL media, what is stopping them from being competive (eventually) on DL media?
I agree that it may take a bit of time--and this may very well be due to TY wanting to make sure their DL media is at just as high a quality level as their SL media before releasing. While my Verbs DL play just fine in my settop player, my CD Speed quality scores have ranged from 45 to 95 on those disks. Yes, the quality is likely due to many circumstances, but it could also be due to Verbatim not quite having all the kinks worked out yet. The PIFs do get more frequent on the second layer.