Nowhere to be found online.
UK distributor (Fishers) haven't got any stock. Currently showing an ETA of 6th Feb.
edit : or 23rd Jan for a 1 litre bottle.
Don't get hung up on SRAM brand oil. The wiki below helps to identify not only who contract manufactures SRAM oils, but what is equivalent.
Worked for me when I did lower leg lube service with castrol 10wt synthetic instead of Rockshox 15wt. Looks and flowed just like what came out, works perfectly.
[url= http://www.peterverdone.com/wiki/index.php?title=Suspension_Fluid ]wiki[/url]
Loco or [url= http://www.amazon.co.uk/Rock-Suspension-Oil-Bottle-0-W30/dp/B00GO4WH66/ref=sr_1_3?ie=UTF8&qid=1420929481&sr=8-3&keywords=pike+oil ]here[/url].
TF Tuned. Their oil may not be exactly SRAM spec, but arguably is proven to be good or better given their experience of servicing the forks.